Sahara
Desert on the African continent
The Sahara (, ) is a desert spanning across North Africa. With an area of , it is the largest hot desert in the world and the third-largest desert overall, smaller only than the deserts of Antarctica and the northern Arctic.
The name "Sahara" is derived from , a broken plural form of ( ), meaning "desert".
The desert covers much of North Africa, excluding the fertile region on the Mediterranean Sea coast, the Atlas Mountains of the Maghreb, and the Nile Valley in Egypt and the Sudan.
It stretches from the Red Sea in the east and the Mediterranean in the north to the Atlantic Ocean in the west, where the landscape gradually changes from desert to coastal plains. To the south it is bounded by the Sahel, a belt of semi-arid tropical savanna around the Niger River valley and the Sudan region of sub-Saharan Africa. The Sahara can be divided into several regions, including the western Sahara, the central Ahaggar Mountains, the Tibesti Mountains, the Aïr Mountains, the Ténéré desert, and the Libyan Desert.
For several hundred thousand years, the Sahara has alternated between desert and savanna grassland in a 20,000-year cycle caused by the precession of Earth's axis (about 26,000 years) as it rotates around the Sun, which changes the location of the North African monsoon.
Geography.
The Sahara covers large parts of Algeria, Chad, Egypt, Libya, Mali, Mauritania, Niger, Western Sahara and Sudan, and parts of southern Morocco and Tunisia. It covers , 31% of the African continent. If all areas with a mean annual precipitation of less than were included, the Sahara would be . It is one of three distinct physiographic provinces of the African massive physiographic division. The Sahara is so large and bright that, in theory, it could be detected from other stars as a surface feature of Earth, with near-current technology.
The Sahara is mainly rocky hamada (stone plateaus); ergs (sand seas – large areas covered with sand dunes) form only a minor part, contrary to common misconception, but many of the sand dunes are over high. Wind or rare rainfall shape the desert features: sand dunes, dune fields, sand seas, stone plateaus, gravel plains ("reg"), dry valleys ("wadi"), dry lakes ("oued"), and salt flats ("shatt" or "chott"). Unusual landforms include the Richat Structure in Mauritania.
Several deeply dissected mountains, many volcanic, rise from the desert, including the Aïr Mountains, Ahaggar Mountains, Saharan Atlas, Tibesti Mountains, Adrar des Iforas, and the Red Sea Hills. The highest peak in the Sahara is Emi Koussi, a shield volcano in the Tibesti range of northern Chad.
The central Sahara is hyperarid, with sparse vegetation. The northern and southern reaches of the desert, along with the highlands, have areas of sparse grassland and desert shrub, with trees and taller shrubs in wadis, where moisture collects. In the central, hyperarid region, there are many subdivisions of the great desert: Tanezrouft, the Ténéré, the Libyan Desert, the Eastern Desert, the Nubian Desert and others. These extremely arid areas often receive no rain for years.
To the north, the Sahara skirts the Mediterranean Sea in Egypt and portions of Libya, but in Cyrenaica and the Maghreb, the Sahara borders the Mediterranean forest, woodland, and scrub eco-regions of northern Africa, all of which have a Mediterranean climate characterized by hot summers and cool and rainy winters. According to the botanical criteria of Frank White and geographer Robert Capot-Rey, the northern limit of the Sahara corresponds to the northern limit of date palm cultivation and the southern limit of the range of esparto, a grass typical of the Mediterranean climate portion of the Maghreb and Iberia. The northern limit also corresponds to the isohyet of annual precipitation.
To the south, the Sahara is bounded by the Sahel, a belt of dry tropical savanna with a summer rainy season that extends across Africa from east to west. The southern limit of the Sahara is indicated botanically by the southern limit of "Cornulaca monacantha" (a drought-tolerant member of the Chenopodiaceae), or northern limit of "Cenchrus biflorus", a grass typical of the Sahel. According to climatic criteria, the southern limit of the Sahara corresponds to the isohyet of annual precipitation (this is a long-term average, since precipitation varies annually).
Important cities located in the Sahara include Nouakchott, the capital of Mauritania; Tamanrasset, Ouargla, Béchar, Hassi Messaoud, Ghardaïa, and El Oued in Algeria; Timbuktu in Mali; Agadez in Niger; Ghat in Libya; and Faya-Largeau in Chad.
Climate.
The Sahara is the world's largest hot desert. It is located in the horse latitudes under the subtropical ridge, a significant belt of semi-permanent subtropical warm-core high pressure where the air from the upper troposphere usually descends, warming and drying the lower troposphere and preventing cloud formation.
The permanent absence of clouds allows unhindered light and thermal radiation. The stability of the atmosphere above the desert prevents any convective overturning, thus making rainfall virtually non-existent. As a consequence, the weather tends to be sunny, dry and stable with a minimal chance of rainfall. Subsiding, diverging, dry air masses associated with subtropical high-pressure systems are extremely unfavorable for the development of convectional showers. The subtropical ridge is the predominant factor that explains the hot desert climate (Köppen climate classification "BWh") of this vast region. The descending airflow is the strongest and the most effective over the eastern part of the Great Desert, in the Libyan Desert: this is the sunniest, driest and the most nearly "rainless" place on the planet, rivaling the Atacama Desert, lying in Chile and Peru.
The rainfall inhibition and the dissipation of cloud cover are most accentuated over the eastern section of the Sahara rather than the western. The prevailing air mass lying above the Sahara is the continental tropical (cT) air mass, which is hot and dry. Hot, dry air masses primarily form over the North-African desert from the heating of the vast continental land area, and it affects the whole desert during most of the year. Because of this extreme heating process, a thermal low is usually noticed near the surface, and is the strongest and the most developed during the summertime. The Sahara High represents the eastern continental extension of the Azores High, centered over the North Atlantic Ocean. The subsidence of the Sahara High nearly reaches the ground during the coolest part of the year, while it is confined to the upper troposphere during the hottest periods.
The effects of local surface low pressure are extremely limited because upper-level subsidence still continues to block any form of air ascent. Also, to be protected against rain-bearing weather systems by the atmospheric circulation itself, the desert is made even drier by its geographical configuration and location. Indeed, the extreme aridity of the Sahara is not only explained by the subtropical high pressure: the Atlas Mountains of Algeria, Morocco and Tunisia also help to enhance the aridity of the northern part of the desert. These major mountain ranges act as a barrier, causing a strong rain shadow effect on the leeward side by dropping much of the humidity brought by atmospheric disturbances along the polar front which affects the surrounding Mediterranean climates.
The primary source of rain in the Sahara is the Intertropical Convergence Zone, a continuous belt of low-pressure systems near the equator which bring the brief, short and irregular rainy season to the Sahel and southern Sahara. Rainfall in this giant desert has to overcome the physical and atmospheric barriers that normally prevent the production of precipitation. The harsh climate of the Sahara is characterized by: extremely low, unreliable, highly erratic rainfall; extremely high sunshine duration values; high temperatures year-round; negligible rates of relative humidity; a significant diurnal temperature variation; and extremely high levels of potential evaporation which are the highest recorded worldwide.
Temperature.
The sky is usually clear above the desert, and the sunshine duration is extremely high everywhere in the Sahara. Most of the desert has more than 3,600 hours of bright sunshine per year (over 82% of daylight hours), and a wide area in the eastern part has over 4,000 hours of bright sunshine per year (over 91% of daylight hours). The highest values are very close to the theoretical maximum value. A value of 4300 hours (98%) of the time would be recorded in Upper Egypt (Aswan, Luxor) and in the Nubian Desert (Wadi Halfa). The annual average direct solar irradiation is around 2,800 kWh/(m2 year) in the Great Desert. The Sahara has a huge potential for solar energy production.
The high position of the Sun, the extremely low relative humidity, and the lack of vegetation and rainfall make the Great Desert the hottest large region in the world, and the hottest place on Earth during summer in some spots. The average high temperature exceeds during the hottest month nearly everywhere in the desert except at very high altitudes. The world's highest officially recorded average daily high temperature was in a remote desert town in the Algerian Desert called Bou Bernous, at an elevation of above sea level, and only Death Valley, California rivals it.
Other hot spots in Algeria such as Adrar, Timimoun, In Salah, Ouallene, Aoulef, Reggane with an elevation between above sea level get slightly lower summer average highs, around during the hottest months of the year. Salah, well known in Algeria for its extreme heat, has average high temperatures of , , and in June, July, August and September respectively. There are even hotter spots in the Sahara, but they are located in extremely remote areas, especially in the Azalai, lying in northern Mali. The major part of the desert experiences around three to five months when the average high strictly exceeds ; while in the southern central part of the desert, there are up to six or seven months when the average high temperature strictly exceeds . Some examples of this are Bilma, Niger and Faya-Largeau, Chad. The annual average daily temperature exceeds everywhere and can approach in the hottest regions year-round. However, most of the desert has a value in excess of .
Sand and ground temperatures are even more extreme. During daytime, the sand temperature is extremely high: it can easily reach or more. A sand temperature of has been recorded in Port Sudan. Ground temperatures of have been recorded in the Adrar of Mauritania and a value of has been measured in Borkou, northern Chad.
Due to lack of cloud cover and very low humidity, the desert usually has high diurnal temperature variations between days and nights. However, it is a myth that the nights are especially cold after extremely hot days in the Sahara. On average, nighttime temperatures tend to be cooler than in the daytime. The smallest variations are found along the coastal regions due to high humidity and are often even lower than a difference, while the largest variations are found in inland desert areas where the humidity is the lowest, mainly in the southern Sahara. Still, it is true that winter nights can be cold, as it can drop to the freezing point and even below, especially in high-elevation areas. The frequency of subfreezing winter nights in the Sahara is strongly influenced by the North Atlantic Oscillation (NAO), with warmer winter temperatures during negative NAO events and cooler winters with more frosts when the NAO is positive. This is because the weaker clockwise flow around the eastern side of the subtropical anticyclone during negative NAO winters, although too dry to produce more than negligible precipitation, does reduce the flow of dry, cold air from higher latitudes of Eurasia into the Sahara significantly.
Precipitation.
The average annual rainfall ranges from very low in the northern and southern fringes of the desert to nearly non-existent over the central and the eastern part. The thin northern fringe of the desert receives more winter cloudiness and rainfall due to the arrival of low pressure systems over the Mediterranean Sea along the polar front, although very attenuated by the rain shadow effects of the mountains and the annual average rainfall ranges from to . For example, Biskra, Algeria, and Ouarzazate, Morocco, are found in this zone. The southern fringe of the desert along the border with the Sahel receives summer cloudiness and rainfall due to the arrival of the Intertropical Convergence Zone from the south and the annual average rainfall ranges from to . For example, Timbuktu, Mali and Agadez, Niger are found in this zone.
The vast central hyper-arid core of the desert is virtually never affected by northerly or southerly atmospheric disturbances and permanently remains under the influence of the strongest anticyclonic weather regime, and the annual average rainfall can drop to less than . In fact, most of the Sahara receives less than . Of the of desert land in the Sahara, an area of about (about 31% of the total area) receives an annual average rainfall amount of or less, while some (about 17% of the total area) receives an average of or less.
The annual average rainfall is virtually zero over a wide area of some in the eastern Sahara comprising deserts of: Libya, Egypt and Sudan (Tazirbu, Kufra, Dakhla, Kharga, Farafra, Siwa, Asyut, Sohag, Luxor, Aswan, Abu Simbel, Wadi Halfa) where the long-term mean approximates per year. Rainfall is very unreliable and erratic in the Sahara as it may vary considerably year by year. In full contrast to the negligible annual rainfall amounts, the annual rates of potential evaporation are extraordinarily high, roughly ranging from per year to more than per year in the whole desert. Nowhere else on Earth has air been found as dry and evaporative as in the Sahara region. However, at least two instances of snowfall have been recorded in Sahara, in February 1979 and December 2016, both in the town of Ain Sefra.
Desertification and prehistoric climate.
One theory for the formation of the Sahara is that the monsoon in Northern Africa was weakened because of glaciation during the Quaternary period, starting two or three million years ago. Another theory is that the monsoon was weakened when the ancient Tethys Sea dried up during the Tortonian period around 7 million years ago.
The climate of the Sahara has undergone enormous variations between wet and dry over the last few hundred thousand years, believed to be caused by long-term changes in the North African climate cycle that alters the path of the North African Monsoon – usually southward. The cycle is caused by a 41,000-year cycle in which the tilt of the earth changes between 22° and 24.5°. At present, it is in a dry period, but it is expected that the Sahara will become green again in 15,000 years. When the North African monsoon is at its strongest, annual precipitation and subsequent vegetation in the Sahara region increase, resulting in conditions commonly referred to as the "green Sahara". For a relatively weak North African monsoon, the opposite is true, with decreased annual precipitation and less vegetation resulting in a phase of the Sahara climate cycle known as the "desert Sahara".
The idea that changes in insolation (solar heating) caused by long-term changes in Earth's orbit are a controlling factor for the long-term variations in the strength of monsoon patterns across the globe was first suggested by Rudolf Spitaler in the late nineteenth century, The hypothesis was later formally proposed and tested by the meteorologist John Kutzbach in 1981. Kutzbach's ideas about the impacts of insolation on global monsoonal patterns have become widely accepted today as the underlying driver of long-term monsoonal cycles. Kutzbach never formally named his hypothesis and as such it is referred to here as the "Orbital Monsoon Hypothesis" as suggested by Ruddiman in 2001.
During the last glacial period, the Sahara was much larger than it is today, extending south beyond its current boundaries. The end of the glacial period brought more rain to the Sahara, from about 8000 BCE to 6000 BCE, perhaps because of low pressure areas over the collapsing ice sheets to the north. Once the ice sheets were gone, the northern Sahara dried out. In the southern Sahara, the drying trend was initially counteracted by the monsoon, which brought rain further north than it does today. By around 4200 BCE, however, the monsoon retreated south to approximately where it is today, leading to the gradual desertification of the Sahara. The Sahara is now as dry as it was about 13,000 years ago.
Lake Chad is the remnant of a former inland sea, paleolake Mega-Chad, which existed during the African humid period. At its largest extent, sometime before 5000 BCE, Lake Mega-Chad was the largest of four Saharan paleolakes, and is estimated to have covered an area of 350,000 km2.
The Sahara pump theory describes this cycle. During periods of a wet or "Green Sahara", the Sahara becomes a savanna grassland and various flora and fauna become more common. Following inter-pluvial arid periods, the Sahara area then reverts to desert conditions and the flora and fauna are forced to retreat northwards to the Atlas Mountains, southwards into West Africa, or eastwards into the Nile Valley. This separates populations of some of the species in areas with different climates, forcing them to adapt, possibly giving rise to allopatric speciation.
It is also proposed that humans accelerated the drying-out period from 6000 to 2500 BCE by pastoralists overgrazing available grassland.
Evidence for cycles.
The growth of speleothems (which requires rainwater) was detected in Hol-Zakh, Ashalim, Even-Sid, Ma'ale-ha-Meyshar, Ktora Cracks, Nagev Tzavoa Cave, and elsewhere, and has allowed tracking of prehistoric rainfall. The Red Sea coastal route was extremely arid before 140 and after 115 kya (thousands of years ago). Slightly wetter conditions appear at 90–87 kya, but it still was just one tenth the rainfall around 125 kya. In the southern Negev Desert speleothems did not grow between 185 and 140 kya (MIS 6), 110–90 (MIS 5.4–5.2), nor after 85 kya nor during most of the interglacial period (MIS 5.1), the glacial period and Holocene. This suggests that the southern Negev was arid-to-hyper-arid in these periods.
During the Last Glacial Maximum (LGM) the Sahara was more extensive than it is now with the extent of the tropical forests being greatly reduced, and the lower temperatures reduced the strength of the Hadley Cell. This is a climate cell which causes rising tropical air of the Inter-Tropical Convergence Zone (ITCZ) to bring rain to the tropics, while dry descending air, at about 20 degrees north, flows back to the equator and brings desert conditions to this region. It is associated with high rates of wind-blown mineral dust, and these dust levels are found as expected in marine cores from the north tropical Atlantic. But around 12,500 BCE the amount of dust in the cores in the Bølling/Allerød phase suddenly plummets and shows a period of much wetter conditions in the Sahara, indicating a Dansgaard-Oeschger (DO) event (a sudden warming followed by a slower cooling of the climate). The moister Saharan conditions had begun about 12,500 BCE, with the extension of the ITCZ northward in the northern hemisphere summer, bringing moist wet conditions and a savanna climate to the Sahara, which (apart from a short dry spell associated with the Younger Dryas) peaked during the Holocene thermal maximum climatic phase at 4000 BCE when mid-latitude temperatures seem to have been between 2 and 3 degrees warmer than in the recent past. Analysis of Nile River deposited sediments in the delta also shows this period had a higher proportion of sediments coming from the Blue Nile, suggesting higher rainfall also in the Ethiopian Highlands. This was caused principally by a stronger monsoonal circulation throughout the sub-tropical regions, affecting India, Arabia and the Sahara. Lake Victoria only recently became the source of the White Nile and dried out almost completely around 15 kya.
The sudden subsequent movement of the ITCZ southwards with a Heinrich event (a sudden cooling followed by a slower warming), linked to changes with the El Niño-Southern Oscillation cycle, led to a rapid drying out of the Saharan and Arabian regions, which quickly became desert. This is linked to a marked decline in the scale of the Nile floods between 2700 and 2100 BCE.
Ecoregions.
The Sahara comprises several distinct ecoregions. With their variations in temperature, rainfall, elevation, and soil, these regions harbor distinct communities of plants and animals.
Flora and fauna.
The flora of the Sahara is highly diversified based on the bio-geographical characteristics of this vast desert. Floristically, the Sahara has three zones based on the amount of rainfall received – the Northern (Mediterranean), Central and Southern Zones. There are two transitional zones – the Mediterranean-Sahara transition and the Sahel transition zone.
The Saharan flora comprises around 2800 species of vascular plants. Approximately a quarter of these are endemic. About half of these species are common to the flora of the Arabian deserts.
The central Sahara is estimated to include five hundred species of plants, which is extremely low considering the huge extent of the area. Plants such as acacia trees, palms, succulents, spiny shrubs, and grasses have adapted to the arid conditions, by growing lower to avoid water loss by strong winds, by storing water in their thick stems to use it in dry periods, by having long roots that travel horizontally to reach the maximum area of water and to find any surface moisture, and by having small thick leaves or needles to prevent water loss by evapotranspiration. Plant leaves may dry out totally and then recover.
Several species of fox live in the Sahara including: the fennec fox, pale fox and Rüppell's fox. The addax, a large white antelope, can go nearly a year in the desert without drinking. The dorcas gazelle is a north African gazelle that can also go for a long time without water. Other notable gazelles include the rhim gazelle and dama gazelle.
The Saharan cheetah (northwest African cheetah) lives in Algeria, Togo, Niger, Mali, Benin, and Burkina Faso. There remain fewer than 250 mature cheetahs, which are very cautious, fleeing any human presence. The cheetah avoids the sun from April to October, seeking the shelter of shrubs such as balanites and acacias. They are unusually pale. The other cheetah subspecies (northeast African cheetah) lives in Chad, Sudan and the eastern region of Niger. However, it is currently extinct in the wild in Egypt and Libya. There are approximately 2000 mature individuals left in the wild.
Other animals include the monitor lizards, hyrax, sand vipers, and small populations of African wild dog, in perhaps only 14 countries and red-necked ostrich. Other animals exist in the Sahara (birds in particular) such as African silverbill and black-faced firefinch, among others. There are also small desert crocodiles in Mauritania and the Ennedi Plateau of Chad.
The deathstalker scorpion can be long. Its venom contains large amounts of agitoxin and scyllatoxin and is very dangerous; however, a sting from this scorpion rarely kills a healthy adult. The Saharan silver ant is unique in that due to the extreme high temperatures of their habitat, and the threat of predators, the ants are active outside their nest for only about ten minutes per day.
Dromedary camels and goats are the domesticated animals most commonly found in the Sahara. Because of its qualities of endurance and speed, the dromedary is the favourite animal used by nomads.
Human activities are more likely to affect the habitat in areas of permanent water (oases) or where water comes close to the surface. Here, the local pressure on natural resources can be intense. The remaining populations of large mammals have been greatly reduced by hunting for food and recreation. In recent years development projects have started in the deserts of Algeria and Tunisia using irrigated water pumped from underground aquifers. These schemes often lead to soil degradation and salinization.
Researchers from Hacettepe University have reported that Saharan soil may have bio-available iron and also some essential macro and micro nutrient elements suitable for use as fertilizer for growing wheat.
History.
People lived on the edge of the desert thousands of years ago, since the end of the last glacial period. In the Central Sahara, engraved and painted rock art were created perhaps as early as 10,000 years ago, spanning the Bubaline Period, Kel Essuf Period, Round Head Period, Pastoral Period, Caballine Period, and Cameline Period. The Sahara was then a much wetter place than it is today. Over 30,000 petroglyphs of river animals such as crocodiles survive, with half found in the Tassili n'Ajjer in southeast Algeria. Fossils of dinosaurs, including "Afrovenator", "Jobaria" and "Ouranosaurus", have also been found here. The modern Sahara, though, is not lush in vegetation, except in the Nile Valley, at a few oases, and in the northern highlands, where Mediterranean plants such as the olive tree are found to grow. Shifts in Earth's axis increased temperatures and decreased precipitation, which caused an abrupt beginning of North Africa desertification about 5,400 years ago.
Kiffians.
The Kiffian culture is a prehistoric industry, or domain, that existed between 10,000 and 8,000 years ago in the Sahara, during the Neolithic Subpluvial. Human remains from this culture were found in 2000 at a site known as Gobero, located in Niger in the Ténéré Desert. The site is known as the largest and earliest grave of Stone Age people in the Sahara. The Kiffians were skilled hunters. Bones of many large savannah animals that were discovered in the same area suggest that they lived on the shores of a lake that was present during the Holocene Wet Phase, a period when the Sahara was verdant and wet. The Kiffian people were tall, standing over six feet in height. Craniometric analysis indicates that this early Holocene population was closely related to the Late Pleistocene Iberomaurusians and early Holocene Capsians of the Maghreb, as well as mid-Holocene Mechta groups. Traces of the Kiffian culture do not exist after 8,000 years ago, as the Sahara went through a dry period for the next thousand years. After this time, the Tenerian culture colonized the area.
Tenerians.
Gobero was discovered in 2000 during an archaeological expedition led by Paul Sereno, which sought dinosaur remains. Two distinct prehistoric cultures were discovered at the site: the early Holocene Kiffian culture, and the middle Holocene Tenerian culture. The post-Kiffian desiccation lasted until around 4600 BCE, when the earliest artefacts associated with the Tenerians have been dated to. Some 200 skeletons have been discovered at Gobero. The Tenerians were considerably shorter in height and less robust than the earlier Kiffians. Craniometric analysis also indicates that they were osteologically distinct. The Kiffian skulls are akin to those of the Late Pleistocene Iberomaurusians, early Holocene Capsians, and mid-Holocene Mechta groups, whereas the Tenerian crania are more like those of Mediterranean groups. Graves show that the Tenerians observed spiritual traditions, as they were buried with artifacts such as jewelry made of hippo tusks and clay pots. The most interesting find is a triple burial, dated to 5300 years ago, of an adult female and two children, estimated through their teeth as being five and eight years old, hugging each other. Pollen residue indicates they were buried on a bed of flowers. The three are assumed to have died within 24 hours of each other, but as their skeletons hold no apparent trauma (they did not die violently) and they have been buried so elaborately – unlikely if they had died of a plague – the cause of their deaths is a mystery.
Tashwinat Mummy.
Uan Muhuggiag appears to have been inhabited from at least the 6th millennium BCE to about 2700 BCE, although not necessarily continuously. The most noteworthy find at Uan Muhuggiag is the well-preserved mummy of a young boy of approximately <templatestyles src="Fraction/styles.css" />2+1⁄2 years old. The child was in a fetal position, then embalmed, then placed in a sack made of antelope skin, which was insulated by a layer of leaves. The boy's organs were removed, as evidenced by incisions in his stomach and thorax, and an organic preservative was inserted to stop his body from decomposing. An ostrich eggshell necklace was also found around his neck. Radiocarbon dating determined the age of the mummy to be approximately 5600 years old, which makes it about 1000 years older than the earliest previously recorded mummy in ancient Egypt. In 1958–59, an archaeological expedition led by Antonio Ascenzi conducted anthropological, radiological, histological and chemical analyses on the Uan Muhuggiag mummy. The team claimed that the mummy was a 30-month-old child of uncertain sex. They also found a long incision on the specimen's abdominal wall, which indicated that the body had been initially mummified by evisceration and later underwent natural desiccation. The team also stated that the mummy possessed "Negroid features." However, modern genetics has since proven that the final claim is unscientific and not supported by evidence. A more recent publication referenced a laboratory examination of the cutaneous features of the child mummy in which the results verified that the child possessed a dark skin complexion. One other individual, an adult, was found at Uan Muhuggiag, buried in a crouched position. However, the body showed no evidence of evisceration or any other method of preservation. The body was estimated to date from about 7500 BP.
Nubians.
During the Neolithic Era, before the onset of desertification around 9500 BCE, the central Sudan had been a rich environment supporting a large population ranging across what is now barren desert, like the Wadi el-Qa'ab. By the 5th millennium BCE, the people who inhabited what is now called Nubia were full participants in the "agricultural revolution", living a settled lifestyle with domesticated plants and animals. Saharan rock art of cattle and herdsmen suggests the presence of a cattle cult like those found in Sudan and other pastoral societies in Africa today. Megaliths found at Nabta Playa are overt examples of probably the world's first known archaeoastronomy devices, predating Stonehenge by some 2,000 years. This complexity, as observed at Nabta Playa, and as expressed by different levels of authority within the society there, likely formed the basis for the structure of both the Neolithic society at Nabta and the Old Kingdom of Egypt.
Archaeological evidence has attested that population settlements occurred in Nubia as early as the Late Pleistocene era and from the 5th millennium BCE onwards, whereas there is "no or scanty evidence" of human presence in the Egyptian Nile Valley during these periods, which may be due to problems in site preservation.
Egyptians.
By 6000 BCE predynastic Egyptians in the southwestern corner of Egypt were herding cattle and constructing large buildings. Subsistence in organized and permanent settlements in predynastic Egypt by the middle of the 6th millennium BCE centered predominantly on cereal and animal agriculture: cattle, goats, pigs and sheep. Metal objects replaced prior ones of stone. Tanning of animal skins, pottery and weaving were commonplace in this era also. There are indications of seasonal or only temporary occupation of the Al Fayyum in the 6th millennium BCE, with food activities centering on fishing, hunting and food-gathering. Stone arrowheads, knives and scrapers from the era are commonly found. Burial items included pottery, jewelry, farming and hunting equipment, and assorted foods including dried meat and fruit. Burial in desert environments appears to enhance Egyptian preservation rites, and the dead were buried facing due west. Several scholars have argued that the African origins of the Egyptian civilisation derived from pastoral communities which emerged in both the Egyptian and Sudanese regions of the Nile Valley in the fifth millennium BCE.
By 3400 BCE, the Sahara was as dry as it is today, due to reduced precipitation and higher temperatures resulting from a shift in Earth's orbit. As a result of this aridification, it became a largely impenetrable barrier to humans, with the remaining settlements mainly being concentrated around the numerous oases that dot the landscape. Little trade or commerce is known to have passed through the interior in subsequent periods, the only major exception being the Nile Valley. The Nile, however, was impassable at several cataracts, making trade and contact by boat difficult.
Tichitt culture.
In 4000 BCE, the start of sophisticated social structure (e.g., trade of cattle as valued assets) developed among herders amid the Pastoral Period of the Sahara. Saharan pastoral culture (e.g., fields of tumuli, lustrous stone rings, axes) was intricate. By 1800 BCE, Saharan pastoral culture expanded throughout the Saharan and Sahelian regions. The initial stages of sophisticated social structure among Saharan herders served as the segue for the development of sophisticated hierarchies found in African settlements, such as Dhar Tichitt. After migrating from the Central Sahara, proto-Mande peoples established their civilization in the Tichitt region of the Western Sahara The Tichitt Tradition of eastern Mauritania dates from 2200 BCE to 200 BCE. Tichitt culture, at Dhar Néma, Dhar Tagant, Dhar Tichitt, and Dhar Walata, included a four-tiered hierarchal social structure, farming of cereals, metallurgy, numerous funerary tombs, and a rock art tradition At Dhar Tichitt and Dhar Walata, pearl millet may have also been independently tamed amid the Neolithic. Dhar Tichitt, which includes Dakhlet el Atrouss, may have served as the primary regional center for the multi-tiered hierarchical social structure of the Tichitt Tradition, and the Malian Lakes Region, which includes Tondidarou, may have served as a second regional center of the Tichitt Tradition. The urban Tichitt Tradition may have been the earliest large-scale, complexly organized society in West Africa, and an early civilization of the Sahara, which may have served as the segue for state formation in West Africa.
As areas where the Tichitt cultural tradition were present, Dhar Tichitt and Dhar Walata were occupied more frequently than Dhar Néma. Farming of crops (e.g., millet) may have been a feature of the Tichitt cultural tradition as early as 3rd millennium BCE in Dhar Tichitt.
As part of a broader trend of iron metallurgy developed in the West African Sahel amid 1st millennium BCE, iron items (350 BCE – 100 CE) were found at Dhar Tagant, iron metalworking and/or items (800 BCE – 400 BCE) were found at Dia Shoma and Walaldé, and the iron remnants (760 BCE – 400 BCE) found at Bou Khzama and Djiganyai. The iron materials that were found are evidence of iron metalworking at Dhar Tagant. In the late period of the Tichitt Tradition at Dhar Néma, tamed pearl millet was used to temper the tuyeres of an oval-shaped low shaft furnace; this furnace was one out of 16 iron furnaces located on elevated ground. Iron metallurgy may have developed before the second half of 1st millennium BCE, as indicated by pottery dated between 800 BCE and 200 BCE. At Dhar Walata and Dhar Tichitt, copper was also used.
After its decline in Mauritania, the Tichitt Tradition spread to the Middle Niger region (e.g., Méma, Macina, Dia Shoma, Jenne Jeno) of Mali where it developed into and persisted as Faïta Facies ceramics between 1300 BCE and 400 BCE among rammed earth architecture and iron metallurgy (which had developed after 900 BCE). Thereafter, the Ghana Empire developed in the 1st millennium CE.
Phoenicians.
The people of Phoenicia, who flourished from 1200 to 800 BCE, created a chain of settlements along the coast of North Africa and traded extensively with its inhabitants. This put them in contact with the people of ancient Libya, who were the ancestors of people who speak Berber languages in North Africa and the Sahara today.
The Libyco-Berber alphabet of the ancient Libyans of north Africa seems to have been based on Phoenician, and its descendant Tifinagh is still used today by the (Berber) Tuareg of the central Sahara.
The Periplus of the Phoenician navigator Hanno, who lived sometime in the 5th century BCE, claims that he founded settlements along the Atlantic coast of Africa, possibly including the Western Sahara. The identification of the places discussed is controversial, and archeological confirmation is lacking.
Greeks.
By 500 BCE, Greeks arrived in the desert. Greek traders spread along the eastern coast of the desert, establishing trading colonies along the Red Sea. The Carthaginians explored the Atlantic coast of the desert, but the turbulence of the waters and the lack of markets caused a lack of presence further south than modern Morocco. Centralized states thus surrounded the desert on the north and east; it remained outside the control of these states. Raids from the nomadic Berber people of the desert were of constant concern to those living on the edge of the desert.
Garamantes.
An urban civilization, the Garamantes, arose around 500 BCE in the Sahara, in a valley that is now called the Wadi al-Ajal in Fezzan, Libya. The Garamantes built a prosperous empire in the heart of the desert. The Garamantes achieved this development by digging tunnels far into the mountains flanking the valley to tap fossil water and bring it to their fields. The Garamantes grew populous and strong, conquering their neighbors, and capturing and enslaving many individuals who were forced to work by extending the tunnels. The ancient Greeks and the Romans knew of the Garamantes and regarded them as uncivilized nomads. However, they traded with them, and a Roman bath has been found in the Garamantes' capital of Garama. Archaeologists have found eight major towns and many other important settlements in the Garamantes' territory. The Garamantes' civilization eventually collapsed after they had depleted available water in the aquifers and could no longer sustain the effort to extend the tunnels further into the mountains.
Between the first century BCE and the fourth century CE, several Roman expeditions into the Sahara were conducted by groups of military and commercial units of Romans.
Islamic and Arabic expansion.
The Byzantine Empire ruled the northern shores of the Sahara from the 5th to the 7th centuries. After the Muslim conquest of Arabia, specifically the Arabian peninsula, the Muslim conquest of North Africa began in the mid-7th to early 8th centuries and Islamic influence expanded rapidly on the Sahara. By the end of 641 all of Egypt was in Muslim hands. Trade across the desert intensified, and a significant slave trade crossed the desert. It has been estimated that from the 10th to 19th centuries some 6,000 to 7,000 slaves were transported north each year.
The Beni Ḥassān and other nomadic Arab tribes dominated the Sanhaja Berber tribes of the western Sahara after the Char Bouba war of the 17th century. As a result, Arabian culture and language came to dominate, and the Berber tribes underwent some Arabization.
Ottoman Turkish era.
In the 16th century the northern fringe of the Sahara, such as coastal regencies in present-day Algeria and Tunisia, as well as some parts of present-day Libya, together with the semi-autonomous kingdom of Egypt, were occupied by the Ottoman Empire. From 1517 Egypt was a valued part of the Ottoman Empire, ownership of which provided the Ottomans with control over the Nile Valley, the east Mediterranean and North Africa. The benefit of the Ottoman Empire was the freedom of movement for citizens and goods. Traders exploited the Ottoman land routes to handle the spices, gold and silk from the East, manufactured goods from Europe, and the slave and gold traffic from Africa. Arabic continued as the local language and Islamic culture was much reinforced. The Sahel and southern Sahara regions were home to several independent states or to roaming Tuareg clans.
European colonialism.
European colonialism in the Sahara began in the 19th century. France conquered the regency of Algiers from the Ottomans in 1830, and French rule spread south from French Algeria and eastwards from Senegal into the upper Niger to include present-day Algeria, Chad, Mali then French Sudan including Timbuktu (1893), Mauritania, Morocco (1912), Niger, and Tunisia (1881). By the beginning of the 20th century, the trans-Saharan trade had clearly declined because goods were moved through more modern and efficient means, such as airplanes, rather than across the desert.
The French took advantage of long-standing animosity between the Chaamba Arabs and the Tuareg. The newly raised "Méhariste" camel corps were originally recruited mainly from the Chaamba nomadic tribe. In 1902, the French penetrated the Hoggar Mountains and defeated Ahaggar Tuareg in the battle of Tit.
The French Colonial Empire was the dominant presence in the Sahara. It established regular air links from Toulouse (HQ of famed Aéropostale), to Oran and over the Hoggar to Timbuktu and West to Bamako and Dakar, as well as trans-Sahara bus services run by La Compagnie Transsaharienne (est. 1927). A remarkable film shot by famous aviator Captain René Wauthier in 1933 documents the first crossing by a large truck convoy from Algiers to Tchad, across the Sahara.
Egypt, under Muhammad Ali and his successors, conquered Nubia in 1820–22, founded Khartoum in 1823, and conquered Darfur in 1874. Egypt, including Sudan, became a British protectorate in 1882. Egypt and Britain lost control of the Sudan from 1882 to 1898 as a result of the Mahdist War. After its capture by British troops in 1898, the Sudan became an Anglo-Egyptian condominium.
Spain captured present-day Western Sahara after 1874, although Rio del Oro remained largely under Sahrawi influence. In 1912, Italy captured parts of what was to be named Libya from the Ottomans. To promote the Roman Catholic religion in the desert, Pope Pius IX appointed a delegate Apostolic of the Sahara and the Sudan in 1868; later in the 19th century his jurisdiction was reorganized into the Vicariate Apostolic of Sahara.
Breakup of the empires and afterwards.
Egypt became independent of Britain in 1936, although the Anglo-Egyptian treaty of 1936 allowed Britain to keep troops in Egypt and to maintain the British-Egyptian condominium in the Sudan. British military forces were withdrawn in 1954.
Most of the Saharan states achieved independence after World War II: Libya in 1951; Morocco, Sudan, and Tunisia in 1956; Chad, Mali, Mauritania, and Niger in 1960; and Algeria in 1962. Spain withdrew from Western Sahara in 1975, and it was partitioned between Mauritania and Morocco. Mauritania withdrew in 1979; Morocco continues to hold the territory (see Western Sahara conflict).
Tuareg people in Mali rebelled several times during the 20th century before finally forcing the Malian armed forces to withdraw below the line demarcating Azawad from southern Mali during the 2012 rebellion. Islamist rebels in the Sahara calling themselves al-Qaeda in the Islamic Maghreb have stepped up their violence in recent years.
In the post–World War II era, several mines and communities have developed to use the desert's natural resources. These include large deposits of oil and natural gas in Algeria and Libya, and large deposits of phosphates in Morocco and Western Sahara. Libya's Great Man-Made River is the world's largest irrigation project. The project uses a pipeline system that pumps fossil water from the Nubian Sandstone Aquifer System to cities in the populous Libyan northern Mediterranean coast including Tripoli and Benghazi.
A number of Trans-African highways have been proposed across the Sahara, including the Cairo–Dakar Highway along the Atlantic coast, the Trans-Sahara Highway from Algiers on the Mediterranean to Kano in Nigeria, the Tripoli – Cape Town Highway from Tripoli in Libya to N'Djamena in Chad, and the Cairo – Cape Town Highway which follows the Nile. Each of these highways is partially complete, with significant gaps and unpaved sections.
Peoples and languages.
The people of the Sahara are of various origins. Among them the Amazigh including the Tuareg, various Arabized Amaziɣ groups such as the Hassaniya-speaking Sahrawis, whose populations include the Znaga, a tribe whose name is a remnant of the pre-historic Zenaga language. Other major groups of people include the: Toubou, Nubians, Zaghawa, Kanuri, Hausa, Songhai, Beja, and Fula/Fulani (; ). The archaeological evidence from the Holocene period has shown that Nilo-Saharan speaking groups had populated the central and southern Sahara before the influx of Berber and Arabic speakers, around 1500 years ago, who now largely populate the Sahara in the modern era.
Arabic dialects are the most widely spoken languages in the Sahara. Arabic, Berber and its variants now regrouped under the term Amazigh (which includes the Guanche language spoken by the original Berber inhabitants of the Canary Islands) and Beja languages are part of the Afro-Asiatic or Hamito-Semitic family. Unlike neighboring West Africa and the central governments of the states that comprise the Sahara, the French language bears little relevance to inter-personal discourse and commerce within the region, its people retaining staunch ethnic and political affiliations with Tuareg and Berber leaders and culture. The legacy of the French colonial era administration is primarily manifested in the territorial reorganization enacted by the Third and Fourth republics, which engendered artificial political divisions within a hitherto isolated and porous region. Diplomacy with local clients was conducted primarily in Arabic, which was the traditional language of bureaucratic affairs. Mediation of disputes and inter-agency communication was served by interpreters contracted by the French government, who, according to Keenan, "documented a space of intercultural mediation," contributing much to preserving the indigenous cultural identities in the region.
References.
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Africa
Continent
Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surface area. With nearly billion people as of , it accounts for about of the world's human population. Africa's population is the youngest among all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Based on 2024 projections, Africa's population will exceed 3.8 billion people by 2100. Africa is the least wealthy inhabited continent per capita and second-least wealthy by total wealth, ahead of Oceania. Scholars have attributed this to different factors including geography, climate, corruption, colonialism, the Cold War, and neocolonialism. Despite this low concentration of wealth, recent economic expansion and a large and young population make Africa an important economic market in the broader global context, and Africa has a large quantity of natural resources.
Africa straddles the equator and the prime meridian. The continent is surrounded by the Mediterranean Sea to the north, the Arabian Plate and the Gulf of Aqaba to the northeast, the Indian Ocean to the southeast and the Atlantic Ocean to the west. The continent includes Madagascar and various archipelagos. It contains 54 fully recognised sovereign states, eight cities and islands that are part of non-African states, and two "de facto" independent states with limited or no recognition. This count does not include Malta and Sicily, which are geologically part of the African continent. Algeria is Africa's largest country by area, and Nigeria is its largest by population. African nations cooperate through the establishment of the African Union, which is headquartered in Addis Ababa.
Africa is highly biodiverse; it is the continent with the largest number of megafauna species, as it was least affected by the extinction of the Pleistocene megafauna. However, Africa is also heavily affected by a wide range of environmental issues, including desertification, deforestation, water scarcity, and pollution. These entrenched environmental concerns are expected to worsen as climate change impacts Africa. The UN Intergovernmental Panel on Climate Change has identified Africa as the continent most vulnerable to climate change.
The history of Africa is long, complex, and varied, and has often been under-appreciated by the global historical community. In African societies the oral word is revered, and they have generally recorded their history via oral tradition, which has led anthropologists to term them "oral civilisations""," contrasted with "literate civilisations" which pride the written word. African culture is rich and diverse both within and between the continent's regions, encompassing art, cuisine, music and dance, religion, and dress.
Africa, particularly Eastern Africa, is widely accepted to be the place of origin of humans and the Hominidae clade, also known as the great apes. The earliest hominids and their ancestors have been dated to around 7 million years ago, and "Homo sapiens" (modern human) are believed to have originated in Africa 350,000 to 260,000 years ago. In the 4th and 3rd millennia BCE Ancient Egypt, Kerma, Punt, and the Tichitt Tradition emerged in North, East and West Africa, while from 3000 BCE to 500 CE the Bantu expansion swept from modern-day Cameroon through Central, East, and Southern Africa, displacing or absorbing groups such as the Khoisan and Pygmies. Some African empires include Wagadu, Mali, Songhai, Sokoto, Ife, Benin, Asante, the Fatimids, Almoravids, Almohads, Ayyubids, Mamluks, Kongo, Mwene Muji, Luba, Lunda, Kitara, Aksum, Ethiopia, Adal, Ajuran, Kilwa, Sakalava, Imerina, Maravi, Mutapa, Rozvi, Mthwakazi, and Zulu. Despite the predominance of states, many societies were heterarchical and stateless. Slave trades created various diasporas, especially in the Americas. From the late 19th century to early 20th century, driven by the Second Industrial Revolution, most of Africa was rapidly conquered and colonised by European nations, save for Ethiopia and Liberia. European rule had significant impacts on Africa's societies, and colonies were maintained for the purpose of economic exploitation and extraction of natural resources. Most present states emerged from a process of decolonisation following World War II, and established the Organisation of African Unity in 1963, the predecessor to the African Union. The nascent countries decided to keep their colonial borders, with traditional power structures used in governance to varying degrees.
Etymology.
 was a Latin name used to refer to the inhabitants of what was then known as northern Africa, located west of the Nile river, and in its widest sense referring to all lands south of the Mediterranean, also known as Ancient Libya. This name seems to have originally referred to a native Libyan tribe, an ancestor of modern Berbers; see Terence for discussion. The name had usually been connected with the Phoenician word "" meaning "dust", but a 1981 hypothesis has asserted that it stems from the Berber word (plural ) meaning "cave", in reference to cave dwellers. The same word may be found in the name of the Banu Ifran from Algeria and Tripolitania, a Berber tribe originally from Yafran (also known as "Ifrane") in northwestern Libya, as well as the city of Ifrane in Morocco.
Under Roman rule, Carthage became the capital of the province then named "Africa Proconsularis", following its defeat of the Carthaginians in the Third Punic War in 146 BC, which also included the coastal part of modern Libya. The Latin suffix can sometimes be used to denote a land (e.g., in from , as used by Julius Caesar). The later Muslim region of Ifriqiya, following its conquest of the Byzantine (Eastern Roman) Empire's "Exarchatus Africae", also preserved a form of the name.
According to the Romans, Africa lies to the west of Egypt, while "Asia" was used to refer to Anatolia and lands to the east. A definite line was drawn between the two continents by the geographer Ptolemy (85–165 CE), indicating Alexandria along the Prime Meridian and making the isthmus of Suez and the Red Sea the boundary between Asia and Africa. As Europeans came to understand the real extent of the continent, the idea of "Africa" expanded with their knowledge.
Other etymological hypotheses have been postulated for the ancient name "Africa":
History.
History in Africa.
In accordance with African cosmology, African historical consciousness viewed historical change and continuity, order and purpose within the framework of man and his environment, the gods, and his ancestors, and he believed himself part of a holistic spiritual entity. In African societies, the historical process is largely a communal one, with eyewitness accounts, hearsay, reminiscences, and occasionally visions, dreams, and hallucinations crafted into narrative oral traditions which are performed and transmitted through generations.1248 In oral traditions time is sometimes mythical and social, and ancestors were considered historical actors. Mind and memory shapes traditions., as events are condensed over time and crystallise into clichés.11 Oral tradition can be exoteric or esoteric. It speaks to people according to their understanding, unveiling itself in accordance with their aptitudes.168 In African epistemology, the epistemic subject "experiences the epistemic object in a sensuous, emotive, intuitive, abstractive understanding, rather than through abstraction alone, as is the case in Western epistemology" to arrive at a "complete knowledge", and as such oral traditions, music, proverbs, and the like were used in the preservation and transmission of knowledge.
Prehistory.
Africa is considered by most paleoanthropologists to be the oldest inhabited territory on Earth, with the Human species originating from the continent. During the mid-20th century, anthropologists discovered many fossils and evidence of human occupation perhaps as early as seven million years ago (Before present, BP). Fossil remains of several species of early apelike humans thought to have evolved into modern humans, such as "Australopithecus afarensis" radiometrically dated to approximately 3.9–3.0 million years BP, "Paranthropus boisei" (c. 2.3–1.4 million years BP) and "Homo ergaster" (c. 1.9 million–600,000 years BP) have been discovered.
After the evolution of "Homo sapiens" approximately 350,000 to 260,000 years BP in Africa, the continent was mainly populated by groups of hunter-gatherers. These first modern humans left Africa and populated the rest of the globe during the Out of Africa II migration dated to approximately 50,000 years BP, exiting the continent either across Bab-el-Mandeb over the Red Sea, the Strait of Gibraltar in Morocco, or the Isthmus of Suez in Egypt.
Other migrations of modern humans within the African continent have been dated to that time, with evidence of early human settlement found in Southern Africa, Southeast Africa, North Africa, and the Sahara.
Emergence of civilization.

The size of the Sahara has historically been extremely variable, with its area rapidly fluctuating and at times disappearing depending on global climatic conditions. At the end of the Ice ages, estimated to have been around 10,500BC, the Sahara had again become a green fertile valley, and its African populations returned from the interior and coastal highlands in Africa, with rock art paintings depicting a fertile Sahara and large populations discovered in Tassili n'Ajjer dating back perhaps 10 millennia. However, the warming and drying climate meant that by 5,000BC, the Sahara region was becoming increasingly dry and hostile. Around 3500BC, due to a tilt in the Earth's orbit, the Sahara experienced a period of rapid desertification. The population trekked out of the Sahara region towards the Nile Valley below the Second Cataract where they made permanent or semi-permanent settlements. A major climatic recession occurred, lessening the heavy and persistent rains in Central and Eastern Africa. Since this time, dry conditions have prevailed in Eastern Africa and, increasingly during the last 200 years, in Ethiopia.
The domestication of cattle in Africa preceded agriculture and seems to have existed alongside hunter-gatherer cultures. It is speculated that by 6,000BC, cattle were domesticated in North Africa. In the Sahara-Nile complex, people domesticated many animals, including the donkey and a small screw-horned goat that was common from Algeria to Nubia. Between 10,000 and 9,000BC, pottery was independently invented in the region of Mali in the savannah of West Africa. In the steppes and savannahs of the Sahara and Sahel in Northern West Africa, people possibly ancestral to modern Nilo-Saharan and Mandé cultures started to collect wild millet, around 8,000 to 6,000BC. Later, gourds, watermelons, castor beans, and cotton were also collected. Sorghum was first domesticated in Eastern Sudan around 4,000BC, in one of the earliest instances of agriculture in human history. Its cultivation would gradually spread across Africa, before spreading to India around 2000BC.
People around modern-day Mauritania started making pottery and built stone settlements (e.g., Tichitt, Oualata). Fishing, using bone-tipped harpoons, became a major activity in the numerous streams and lakes formed from the increased rains. In West Africa, the wet phase ushered in an expanding rainforest and wooded savanna from Senegal to Cameroon. Between 9,000 and 5,000BC, Niger–Congo speakers domesticated the oil palm and raffia palm. Black-eyed peas and voandzeia (African groundnuts), were domesticated, followed by okra and kola nuts. Since most of the plants grew in the forest, the Niger–Congo speakers invented polished stone axes for clearing forest.
Around 4,000BC, the Saharan climate started to become drier at an exceedingly fast pace. This climate change caused lakes and rivers to shrink significantly and caused increasing desertification. This, in turn, decreased the amount of land conducive to settlements and encouraged migrations of farming communities to the more tropical climate of West Africa. During the first millennium BC, a reduction in wild grain populations related to changing climate conditions facilitated the expansion of farming communities and the rapid adoption of rice cultivation around the Niger River.
By the first millennium BC, ironworking had been introduced in Northern Africa. Around that time it also became established in parts of sub-Saharan Africa, either through independent invention there or diffusion from the north and vanished under unknown circumstances around 500AD, having lasted approximately 2,000 years, and by 500BC, metalworking began to become commonplace in West Africa. Ironworking was fully established by roughly 500BC in many areas of East and West Africa, although other regions did not begin ironworking until the early centuries AD. Copper objects from Egypt, North Africa, Nubia, and Ethiopia dating from around 500BC have been excavated in West Africa, suggesting that Trans-Saharan trade networks had been established by this date.
4th millenniumBC – 6th centuryAD.
Northeast Africa.
From 3500BC, nomes (ruled by nomarchs) coalesced to form the kingdoms of Lower Egypt and Upper Egypt in northeast Africa. Around 3100BC Upper Egypt conquered Lower Egypt to unify Egypt under the 1st dynasty, with the process of consolidation and assimilation completed by the time of the 3rd dynasty who formed the Old Kingdom of Egypt in 2686BC. The Kingdom of Kerma emerged around this time to become the dominant force in Nubia, controlling territory as large as Egypt between the 1st and 4th cataracts of the Nile.
The 4th dynasty oversaw the height of the Old Kingdom, and constructed many great pyramids. Under the 6th dynasty power gradually decentralised to the nomarchs, culminating in the disintegration of the kingdom, exacerbated by drought and famine, thus commencing the First Intermediate Period in 2200BC. This shattered state would last until 2055BC when the 11th dynasty, based in Thebes, conquered the others to form the Middle Kingdom of Egypt, with the 12th dynasty expanding into Lower Nubia at the expense of Kerma. In 1700BC, the Middle Kingdom fractured in two, ushering in the Second Intermediate Period. The Hyksos, a militaristic people from Palestine, invaded and conquered Lower Egypt, while Kerma coordinated invasions deep into Egypt to reach its greatest extent.
In 1550BC, the 18th dynasty expelled the Hyksos, and established the New Kingdom of Egypt. Using the advanced military technology the Hyksos had brought, the New Kingdom conquered the Levant from the Canaanites, Mittani, Amorites, and Hittites, and extinguished Kerma, incorporating Nubia into the empire, and sending the Egyptian empire into its golden age. Internal struggles, drought, famine, and invasions by a confederation of seafaring peoples contributed to the New Kingdom's collapse in 1069BC, commencing the Third Intermediate Period.
Egypt's collapse liberated the more Egyptianised Kingdom of Kush in Nubia, who manoeuvred into power in Upper Egypt and conquered Lower Egypt in 754BC to form the Kushite Empire. The Kushites ruled for a century and oversaw a revival in pyramid building, until they were driven out of Egypt by the Assyrians in 663BC in reprisal for their expansion towards the Assyrian Empire. The Assyrians installed a puppet dynasty that later gained independence and once more unified Egypt, until they were conquered by the Achaemenid Empire in 525BC. Egypt regained independence under the 28th dynasty in 404BC but they were reconquered by the Achaemenids in 343BC. The conquest of Achaemenid Egypt by Alexander the Great in 332BC marked the beginning of Hellenistic rule and the installation of the Macedonian Ptolemaic dynasty in Egypt.
The Ptolemaics lost their holdings outside of Africa to the Seleucids in the Syrian Wars, expanded into Cyrenaica and subjugated Kush in the 3rd century BC. In the 1st century BC, Ptolemaic Egypt became entangled in a Roman civil war, leading to its conquest by the Romans in 30BC. The Crisis of the Third Century in the Roman Empire freed the Levantine city state of Palmyra, which conquered Egypt; their brief rule ended when they were reconquered by the Romans. In the midst of this, Kush regained independence from Egypt, and they would persist as a major regional power until, having been weakened from internal rebellion amid worsening climatic conditions, invasions by Aksum and the Noba caused their disintegration into Makuria, Alodia, and Nobatia in the 5th centuryAD. The Romans managed to hold on to Egypt for the rest of the ancient period.
Horn of Africa.
In the Horn of Africa, there was the Land of Punt, a kingdom on the Red Sea, likely located in modern-day Eritrea or northern Somaliland. The Ancient Egyptians initially traded via middle-men with Punt until in 2350BC when they established direct relations. They would become close trading partners for over a millennium. Towards the end of the ancient period, northern Ethiopia and Eritrea bore the Kingdom of D'mt beginning in 980BC. In modern-day Somalia and Djibouti there was the Macrobian Kingdom, with archaeological discoveries indicating the possibility of other unknown sophisticated civilisations at this time. After D'mt's fall in the 5th century BC the Ethiopian Plateau came to be ruled by numerous smaller unknown kingdoms who experienced strong south Arabian influence, until the growth and expansion of Aksum in the 1st century BC. Along the Horn's coast there were many ancient Somali city-states that thrived off of the wider Red Sea trade and transported their cargo via beden, exporting myrrh, frankincense, spices, gum, incense, and ivory, with freedom from Roman interference causing Indians to give the cities a lucrative monopoly on cinnamon from ancient India.
The Kingdom of Aksum grew from a principality into a major power on the trade route between Rome and India through conquering its unfortunately unknown neighbours, gaining a monopoly on Indian Ocean trade in the region. Aksum's rise had them rule over much of the regions from Lake Tana to the valley of the Nile, and they further conquered parts of the ailing Kingdom of Kush, led campaigns against the Noba and Beja peoples, and expanded into South Arabia. This led the Persian prophet Mani to consider Aksum as one of the four great powers of the 3rd century AD alongside Persia, Rome, and China. In the 4th century AD Aksum's king converted to Christianity and Aksum's population, who had followed syncretic mixes of local beliefs, slowly followed. The end of the 5th century saw Aksum allied with the Byzantine Empire, who viewed themselves as defenders of Christendom, balanced against the Sassanid Empire and the Himyarite Kingdom in Arabia.
Northwest Africa.
The Maghreb and Ifriqiya were mostly cut off from the cradle of civilisation in Egypt by the Libyan desert, exacerbated by Egyptian boats being tailored to the Nile and not coping well in the open Mediterranean Sea. This caused its societies to develop contiguous to those of Southern Europe, until Phoenician settlements came to dominate the most lucrative trading locations in the Gulf of Tunis. Phoenician settlements subsequently grew into Ancient Carthage after gaining independence from Phoenicia in the 6th century BC, and they would build an extensive empire and a strict mercantile network, all secured by one of the largest and most powerful navies in the ancient Mediterranean. Carthage would meet its demise in the Punic Wars against the expansionary Roman Republic, however momentum in these wars was not linear, with Carthage initially experiencing considerable success in the Second Punic War following Hannibal's infamous crossing of the alps into northern Italy. Their defeat and subsequent collapse of their empire would produce two further polities in the Maghreb; Numidia, which had assisted the Romans in the Second Punic War, Mauretania, a Mauri tribal kingdom and home of the legendary King Atlas, and various tribes such as Garamantes, Musulamii, and Bavares. The Third Punic War would result in Carthage's total defeat in 146 BC and the Romans established the province of Africa, with Numidia assuming control of many of Carthage's African ports. Towards the end of the 2nd century BC Mauretania fought alongside Numidia's Jugurtha in the Jugurthine War against the Romans after he had usurped the Numidian throne from a Roman ally. Together they inflicted heavy casualties that quaked the Roman Senate, with the war only ending inconclusively when Mauretania's Bocchus I sold out Jugurtha to the Romans.
At the turn of the millennium, they both would face the same fate as Carthage and be conquered by the Romans who established Mauretania and Numidia as provinces of their empire, while Musulamii, led by Tacfarinas, and Garamantes were eventually defeated in war in the 1st century AD however weren't conquered. In the 5th century AD the Vandals conquered north Africa precipitating the fall of Rome. Swathes of indigenous peoples would regain self-governance in the Mauro-Roman Kingdom and its numerous successor polities in the Maghreb, namely the kingdoms of Ouarsenis, Aurès, and Altava. The Vandals ruled Ifriqiya for a century until Byzantine reconquest in the early 6th century AD. The Byzantines and the Berber kingdoms fought minor inconsequential conflicts, such as in the case of Garmul, however largely coexisted. Further inland to the Byzantine Exarchate of Africa were the Sanhaja in modern-day Algeria, a broad grouping of three groupings of tribal confederations, one of which is the Masmuda grouping in modern-day Morocco, along with the nomadic Zenata; their composite tribes would later go onto shape much of North African history.
West Africa.
In the western Sahel the rise of settled communities occurred largely as a result of the domestication of millet and of sorghum. Archaeology points to sizable urban populations in West Africa beginning in the 4th millennium BC, which had crucially developed iron metallurgy by 1200BC, in both smelting and forging for tools and weapons. Extensive east-west belts of deserts, grasslands, and forests from north to south were crucial for the moulding of their respective societies and meant that prior to the accession of trans-Saharan trade routes, symbiotic trade relations developed in response to the opportunities afforded by north–south diversity in ecosystems. Various civilisations prospered in this period. From 4000BC, the Tichitt culture in modern-day Mauritania and Mali was the oldest known complexly organised society in West Africa, with a four tiered hierarchical social structure. Other civilisations include the Kintampo culture from 2500BC in modern-day Ghana, the Nok culture from 1500 BC in modern-day Nigeria, the Daima culture around Lake Chad from 550BC, Djenné-Djenno from 250BC in modern-day Mali, and the Serer civilisation in modern-day Senegal, which built the Senegambian stone circles from the 3rd century BC. There is also detailed record of Igodomigodo, a small kingdom founded presumably in 40BC, which would later go on to form the Benin Empire.
Towards the end of the 3rd century AD, a wet period in the Sahel created areas for human habitation and exploitation that had not been habitable for the best part of a millennium, with the Kingdom of Wagadu, the local name of the Ghana Empire, rising out of the Tichitt culture, growing wealthy following the introduction of the camel to the western Sahel, revolutionising the trans-Saharan trade that linked their capital and Aoudaghost with Tahert and Sijilmasa in North Africa. Soninke traditions likely contain content from prehistory, mentioning four previous foundings of Wagadu, and holds that the final founding of Wagadu occurred after their first king did a deal with "Bida", a serpent deity who was guarding a well, to sacrifice one maiden a year in exchange for assurance regarding plenty of rainfall and gold supply. Wagadu's core traversed modern-day southern Mauritania and western Mali, and Soninke tradition portrays early Ghana as warlike, with horse-mounted warriors key to increasing its territory and population, although details of their expansion are extremely scarce. Wagadu made its profits from maintaining a monopoly on gold heading north and salt heading south, despite not controlling the gold fields themselves, located in the forest regions. It is probable that Wagadu's dominance on trade allowed for the gradual consolidation of many polities into a confederated state, whose composites stood in varying relations to the core, from fully administered to nominal tribute-paying parity. Based on large tumuli scattered across West Africa dating to this period, it has been stipulated that relative to Wagadu, there were further simultaneous and preceding kingdoms that have unfortunately been lost to time.
Central, Eastern, and Southern Africa.
At the 4th millennium BC the Congo Basin was inhabited by the Bambenga, Bayaka, Bakoya, and Babongo in the west, the Bambuti in the east, and the Batwa who were widely scattered and also present in the Great Lakes region; together they are grouped as Pygmies. On the later-named Swahili coast there were Cushitic-speaking peoples, and the Khoisan (a neologism for the Khoekhoe and San) in the continent's south.
The Bantu expansion constituted a major series of migrations of Bantu peoples from central Africa to eastern and southern Africa and was substantial in the settling of the continent. Commencing in the 2nd millennium BC, the Bantu began to migrate from Cameroon to central, eastern, and southern Africa, laying the foundations for future states such as the Kingdom of Kongo in the Congo Basin, the Empire of Kitara in the African Great Lakes, the Luba Empire in the Upemba Depression, the Kilwa Sultanate in the Swahili coast by crowding out Azania, with Rhapta being its last stronghold by the 1st century AD. These migrations also prefaced the Kingdom of Mapungubwe in the Zambezi basin. After reaching the Zambezi, the Bantu continued southward, with eastern groups continuing to modern-day Mozambique and reaching Maputo in the 2nd century AD. Further to the south, settlements of Bantu peoples who were iron-using agriculturists and herdsmen were well established south of the Limpopo River by the 4th century AD, displacing and absorbing the Khoisan.
By the Chari River south of Lake Chad the Sao civilisation flourished for over a millennium beginning in the 6th century BC, in territory that later became part of present-day Cameroon and Chad. Sao artifacts show that they were skilled workers in bronze, copper, and iron,19 with finds including bronze sculptures, terracotta statues of human and animal figures, coins, funerary urns, household utensils, jewellery, highly decorated pottery, and spears.19 Nearby, around Lake Ejagham in south-west Cameroon, the Ekoi civilisation rose circa 2nd century AD, and are most notable for constructing the Ikom monoliths and developing the Nsibidi script.
9th to 18th centuries.
Pre-colonial Africa possessed as many as 10,000 different states and polities. These included small family groups of hunter-gatherers such as the San people of southern Africa; larger, more structured groups such as the family clan groupings of the Bantu peoples of central, southern, and eastern Africa; heavily structured clan groups in the Horn of Africa; the large Sahelian kingdoms; and autonomous city-states and kingdoms, such as those of the Akan; Edo, Yoruba, and Igbo people in West Africa; and the Swahili coastal trading towns of Southeast Africa.
By the 9th century AD, a string of dynastic states, including the earliest Hausa states, stretched across the sub-Saharan savannah from the western regions to central Sudan. The most powerful of these states were Ghana, Gao, and the Kanem-Bornu Empire. Ghana declined in the eleventh century, but was succeeded by the Mali Empire, which consolidated much of western Sudan in the thirteenth century. Kanem accepted Islam in the eleventh century.
In the forested regions of the West African coast, independent kingdoms grew with little influence from the Muslim north. The Kingdom of Nri, which was ruled by the Eze Nri, was established around the ninth century, making it one of the oldest kingdoms in present-day Nigeri. The Nri kingdom is famous for its elaborate bronzes, found at the town of Igbo-Ukwu.
The Kingdom of Ife, historically the first of these Yoruba city-states or kingdoms, established government under a priestly oba ('king' or 'ruler' in the Yoruba language), called the "Ooni of Ife". Ife was noted as a major religious and cultural centre in West Africa and for its unique naturalistic tradition of bronze sculpture. The Ife model of government was adapted by the Oyo Empire, whose obas, called the "Alaafins of Oyo", controlled many other Yoruba and non-Yoruba city-states and kingdoms including the Fon "Kingdom of Dahomey".
The Almoravids were a Berber dynasty from the Sahara that spread over northwestern Africa and the Iberian peninsula during the eleventh century. The Banu Hilal and Banu Ma'qil were a collection of Arab Bedouin tribes from the Arabian Peninsula who migrated westwards via Egypt between the eleventh and thirteenth centuries. Their migration resulted in the fusion of the Arabs and Berbers, where the locals were Arabized, and Arab culture absorbed elements of the local culture, under the unifying framework of Islam.
Following the breakup of Mali, a local leader named Sonni Ali (1464–1492) founded the Songhai Empire in the region of middle Niger and the western Sudan and took control of the trans-Saharan trade. Sonni Ali seized Timbuktu in 1468 and Jenne in 1473, building his regime on trade revenues and the cooperation of Muslim merchants. His successor Askia Mohammad I (1493–1528) made Islam the official religion, built mosques, and brought to Gao Muslim scholars, including al-Maghili (d.1504), the founder of an important tradition of Sudanic African Muslim scholarship. By the eleventh century, some Hausa states – such as Kano, Jigawa, Katsina, and Gobir – had developed into walled towns engaging in trade, servicing caravans, and the manufacture of goods. Until the fifteenth century, these small states were on the periphery of the major Sudanic empires of the era, paying tribute to Songhai to the west and Kanem-Borno to the east.
Height of the slave trade.
Slavery had long been practiced in Africa. Between the 15th and the 19th centuries, the Atlantic slave trade took an estimated 7–12 million slaves to the New World. In addition, more than 1 million Europeans were captured by Barbary pirates and sold as slaves in North Africa between the 16th and 19th centuries.
In West Africa, the decline of the Atlantic slave trade in the 1820s caused dramatic economic shifts in local polities. The gradual decline of slave-trading, prompted by a lack of demand for slaves in the New World, increasing anti-slavery legislation in Europe and America, and the British Royal Navy's increasing presence off the West African coast, obliged African states to adopt new economies. Between 1808 and 1860, the British West Africa Squadron seized approximately 1,600 slave ships and freed 150,000 Africans who were aboard.
Action was also taken against African leaders who refused to agree to British treaties to outlaw the trade, for example against "the usurping King of Lagos", deposed in 1851. Anti-slavery treaties were signed with over 50 African rulers. The largest powers of West Africa (the Asante Confederacy, the Kingdom of Dahomey, and the Oyo Empire) adopted different ways of adapting to the shift. Asante and Dahomey concentrated on the development of "legitimate commerce" in the form of palm oil, cocoa, timber and gold, forming the bedrock of West Africa's modern export trade. The Oyo Empire, unable to adapt, collapsed into civil wars.
Independence struggles.
Imperial rule by Europeans continued until after the conclusion of World War II, when almost all remaining colonial territories gradually obtained formal independence. Independence movements in Africa gained momentum following World War II, which left the major European powers weakened. In 1951, Libya, a former Italian colony, gained independence. In 1956, Tunisia and Morocco won their independence from France. Ghana followed suit the next year (March 1957), becoming the first of the sub-Saharan colonies to be granted independence. Over the next decade, waves of decolonization took place across the continent, culminating in the 1960 Year of Africa and the establishment of the Organisation of African Unity in 1963.
Portugal's overseas presence in sub-Saharan Africa (most notably in Angola, Cape Verde, Mozambique, Guinea-Bissau, and São Tomé and Príncipe) lasted from the 16th century to 1975, after the Estado Novo regime was overthrown in a military coup in Lisbon. Rhodesia unilaterally declared independence from the United Kingdom in 1965, under the white minority government of Ian Smith, but was not internationally recognized as an independent state (as Zimbabwe) until 1980, when black nationalists gained power after a bitter guerrilla war. Although South Africa was one of the first African countries to gain independence, the state remained under the control of the country's white minority, initially through qualified voting rights and from 1956 by a system of racial segregation known as apartheid, until 1994.
Post-colonial Africa.
Today, Africa contains 54 sovereign countries. Since independence, African states have frequently been hampered by instability, corruption, violence, and authoritarianism. The vast majority of African states are republics that operate under some form of the presidential system of rule. However, few of them have been able to sustain democratic governments on a permanent basis—per the criteria laid out by Lührmann et al. (2018), only Botswana and Mauritius have been consistently democratic for the entirety of their post-colonial history. Most African countries have experienced several coups or periods of military dictatorship. Between 1990 and 2018, though, the continent as a whole has trended towards more democratic governance.
Upon independence an overwhelming majority of Africans lived in extreme poverty. The continent suffered from the lack of infrastructural or industrial development under colonial rule, along with political instability. With limited financial resources or access to global markets, relatively stable countries such as Kenya still experienced only very slow economic development. Only a handful of African countries succeeded in obtaining rapid economic growth prior to 1990. Exceptions include Libya and Equatorial Guinea, both of which possess large oil reserves.
Instability throughout the continent after decolonization resulted primarily from marginalization of ethnic groups, and corruption. In pursuit of personal political gain, many leaders deliberately promoted ethnic conflicts, some of which had originated during the colonial period, such as from the grouping of multiple unrelated ethnic groups into a single colony, the splitting of a distinct ethnic group between multiple colonies, or existing conflicts being exacerbated by colonial rule (for instance, the preferential treatment given to ethnic Hutus over Tutsis in Rwanda during German and Belgian rule).
Faced with increasingly frequent and severe violence, military rule was widely accepted by the population of many countries as means to maintain order, and during the 1970s and 1980s a majority of African countries were controlled by military dictatorships. Territorial disputes between nations and rebellions by groups seeking independence were also common in independent African states. The most devastating of these was the Nigerian Civil War, fought between government forces and an Igbo separatist republic, which resulted in a famine that killed 1–2 million people. Two civil wars in Sudan, the first lasting from 1955 to 1972 and the second from 1983 to 2005, collectively killed around 3 million. Both were fought primarily on ethnic and religious lines.
Cold War conflicts between the United States and the Soviet Union also contributed to instability. Both the Soviet Union and the United States offered considerable incentives to African political and military leaders who aligned themselves with the superpowers' foreign policy. As an example, during the Angolan Civil War, the Soviet and Cuban aligned MPLA and the American aligned UNITA received the vast majority of their military and political support from these countries. Many African countries became highly dependent on foreign aid. The sudden loss of both Soviet and American aid at the end of the Cold War and fall of the USSR resulted in severe economic and political turmoil in the countries most dependent on foreign support.
There was a major famine in Ethiopia between 1983 and 1985, killing up to 1.2 million people, which most historians attribute primarily to the forced relocation of farmworkers and seizure of grain by communist Derg government, further exacerbated by the civil war. In 1994 a genocide in Rwanda resulted in up to 800,000 deaths, added to a severe refugee crisis and fueled the rise of militia groups in neighboring countries. This contributed to the outbreak of the first and second Congo Wars, which were the most devastating military conflicts in modern Africa, with up to 5.5 million deaths, making it by far the deadliest conflict in modern African history and one of the costliest wars in human history.
Various conflicts between various insurgent groups and governments continue. Since 2003, there has been an ongoing conflict in Darfur (Sudan), which peaked in intensity from 2003 to 2005 with notable spikes in violence in 2007 and 2013–15, killing around 300,000 people total. The Boko Haram Insurgency primarily within Nigeria (with considerable fighting in Niger, Chad, and Cameroon as well) has killed around 350,000 people since 2009. Most African conflicts have been reduced to low-intensity conflicts as of 2022. However, the Tigray War from 2020 to 2022 killed an estimated 300,000–500,000 people, primarily due to famine.
Overall though, violence across Africa has greatly declined in the 21st century, with the end of civil wars in Angola, Sierra Leone, and Algeria in 2002, Liberia in 2003, and Sudan and Burundi in 2005. The Second Congo War, which involved 9 countries and several insurgent groups, ended in 2003. This decline in violence coincided with many countries abandoning communist-style command economies and opening up for market reforms, which over the course of the 1990s and 2000s promoted the establishment of permanent, peaceful trade between neighboring countries (see Capitalist peace).
Improved stability and economic reforms have led to a great increase in foreign investment into many African nations, mainly from China, which further spurred economic growth. Between 2000 and 2014, annual GDP growth in sub-Saharan Africa averaged 5.02%, doubling its total GDP from $811 billion to $1.63 trillion (constant 2015 USD). North Africa experienced comparable growth rates. A significant part of this growth can also be attributed to the facilitated diffusion of information technologies and specifically the mobile telephone. While several individual countries have maintained high growth rates, since 2014 overall growth has considerably slowed, primarily as a result of falling commodity prices, continued lack of industrialization, and epidemics of Ebola and COVID-19.
Geography.
Africa is the largest of the three great southward projections from the largest landmass of the Earth. Separated from Europe by the Mediterranean Sea, it is joined to Asia at its northeast extremity by the Isthmus of Suez (transected by the Suez Canal), wide. Geopolitically, Egypt's Sinai Peninsula east of the Suez Canal is often considered part of Africa as well.
The coastline is long, and the absence of deep indentations of the shore is illustrated by the fact that Europe, which covers only – about a third of the surface of Africa – has a coastline of . From the most northerly point, Ras ben Sakka in Tunisia (37°21' N), to the most southerly point, Cape Agulhas in South Africa (34°51'15" S), is a distance of approximately . Cape Verde, 17°33'22" W, the westernmost point, is a distance of approximately to Ras Hafun, 51°27'52" E, the most easterly projection that neighbours Cape Guardafui, the tip of the Horn of Africa.
Africa's largest country is Algeria, and its smallest country is Seychelles, an archipelago off the east coast. The smallest nation on the continental mainland is The Gambia.
Climate.
The climate of Africa ranges from tropical to subarctic on its highest peaks. Its northern half is primarily desert, or arid, while its central and southern areas contain both savanna plains and dense jungle (rainforest) regions. In between, there is a convergence, where vegetation patterns such as sahel and steppe dominate. Africa is the hottest continent on Earth and 60% of the entire land surface consists of drylands and deserts. The record for the highest-ever recorded temperature, in Libya in 1922 (), was discredited in 2013.
Ecology and biodiversity.
Africa has over 3,000 protected areas, with 198 marine protected areas, 50 biosphere reserves, and 80 wetlands reserves. Significant habitat destruction, increases in human population and poaching are reducing Africa's biological diversity and arable land. Human encroachment, civil unrest and the introduction of non-native species threaten biodiversity in Africa. This has been exacerbated by administrative problems, inadequate personnel and funding problems.
Deforestation is affecting Africa at twice the world rate, according to the United Nations Environment Programme (UNEP). According to the University of Pennsylvania African Studies Center, 31% of Africa's pasture lands and 19% of its forests and woodlands are classified as degraded, and Africa is losing over four million hectares of forest per year, which is twice the average deforestation rate for the rest of the world. Some sources claim that approximately 90% of the original, virgin forests in West Africa have been destroyed. Over 90% of Madagascar's original forests have been destroyed since the arrival of humans 2000 years ago. About 65% of Africa's agricultural land suffers from soil degradation.
Fauna.
Africa boasts perhaps the world's largest combination of density and "range of freedom" of wild animal populations and diversity, with wild populations of large carnivores (such as lions, hyenas, and cheetahs) and herbivores (such as buffalo, elephants, camels, and giraffes) ranging freely on primarily open non-private plains. It is also home to a variety of "jungle" animals including snakes and primates and aquatic life such as crocodiles and amphibians. In addition, Africa has the largest number of megafauna species, as it was least affected by the extinction of the Pleistocene megafauna.
Politics.
African Union.
The African Union (AU) is a continental union consisting of 55 member states. The union was formed, with Addis Ababa, Ethiopia, as its headquarters, on 26 June 2001. The union was officially established on 9 July 2002 as a successor to the Organisation of African Unity (OAU). In July 2004, the African Union's Pan-African Parliament (PAP) was relocated to Midrand, in South Africa, but the African Commission on Human and Peoples' Rights remained in Addis Ababa.
The African Union, not to be confused with the AU Commission, is formed by the Constitutive Act of the African Union, which aims to transform the African Economic Community, a federated commonwealth, into a state under established international conventions. The African Union has a parliamentary government, known as the African Union Government, consisting of legislative, judicial and executive organs. It is led by the African Union President and Head of State, who is also the President of the Pan-African Parliament. A person becomes AU President by being elected to the PAP, and subsequently gaining majority support in the PAP. The powers and authority of the President of the African Parliament derive from the Constitutive Act and the Protocol of the Pan-African Parliament, as well as the inheritance of presidential authority stipulated by African treaties and by international treaties, including those subordinating the Secretary General of the OAU Secretariat (AU Commission) to the PAP. The government of the AU consists of all-union, regional, state, and municipal authorities, as well as hundreds of institutions, that together manage the day-to-day affairs of the institution.
Extensive human rights abuses still occur in several parts of Africa, often under the oversight of the state. Most of such violations occur for political reasons, often as a side effect of civil war. Countries where major human rights violations have been reported in recent times include the Democratic Republic of the Congo, Sierra Leone, Liberia, Sudan, Zimbabwe, and Ivory Coast.
List of states and territories.
Algeria
Togo
Benin
Botswana
Cameroon
Cent Afr Rep
Chad
DemocraticRepublic ofthe Congo
Djibouti
Egypt
Equatorial Guinea
Eritrea
Ethiopia
Cape*VerdeLibya
Mali
Ghana
Sierra<br>Leone
IvoryCoast
BurkinaFaso
Mauritania
Morocco
São Tomé<br>and Príncipe*
Gabon
Namibia
Niger
NigeriaCongo
Somalia
South Africa
Sudan
South Sudan
Tunisia
WesternSahara
Senegal
The Gambia
Guinea-Bissau
Guinea
Kenya
LiberiaMadagascar
Malawi
Mozambique
Burundi
Rwanda
Uganda
Tanzania
Angola
Saint Helena (UK)*
Lesotho
Eswatini
Zambia
ZimbabweMauritius*
Réunion*
*Comoros
Seychelles
AtlanticOcean
AtlanticOcean
IndianOcean
Strait of Gibraltar
Mediterranean Sea
Red  Sea
The countries in this table are categorized according to the scheme for geographic subregions used by the United Nations, and data included are per sources in cross-referenced articles. Where they differ, provisos are clearly indicated.
Economy.
Although it has abundant natural resources, Africa remains the world's poorest and least-developed continent (other than Antarctica), the result of a variety of causes that may include corrupt governments that have often committed serious human rights violations, failed central planning, high levels of illiteracy, low self-esteem, lack of access to foreign capital, legacies of colonialism, the slave trade, and the Cold War, and frequent tribal and military conflict (ranging from guerrilla warfare to genocide). Its total nominal GDP remains behind that of the United States, China, Japan, Germany, the United Kingdom, India and France. According to the United Nations' Human Development Report in 2003, the bottom 24 ranked nations (151st to 175th) were all African.
Poverty, illiteracy, malnutrition, inadequate water supply and sanitation, and poor health affect a large proportion of the people who reside on the African continent. In August 2008, the World Bank announced revised global poverty estimates based on a new international poverty line of $1.25 per day (versus the previous measure of $1.00). Eighty-one percent of the sub-Saharan African population was living on less than $2.50 (PPP) per day in 2005, compared with 86% for India.
Sub-Saharan Africa is the least successful region of the world in reducing poverty ($1.25 per day); some 50% of the population living in poverty in 1981 (200 million people), a figure that rose to 58% in 1996 before dropping to 50% in 2005 (380 million people). The average poor person in sub-Saharan Africa is estimated to live on only 70 cents per day, and was poorer in 2003 than in 1973, indicating increasing poverty in some areas. Some of it is attributed to unsuccessful economic liberalization programmes spearheaded by foreign companies and governments, but other studies have cited bad domestic government policies more than external factors.
Africa is now at risk of being in debt once again, particularly in sub-Saharan African countries. The last debt crisis in 2005 was resolved with help from the heavily indebted poor countries scheme (HIPC). The HIPC resulted in some positive and negative effects on the economy in Africa. About ten years after the 2005 debt crisis in sub-Saharan Africa was resolved, Zambia fell back into debt. A small reason was due to the fall in copper prices in 2011, but the bigger reason was that a large amount of the money Zambia borrowed was wasted or pocketed by the elite.
From 1995 to 2005, Africa's rate of economic growth increased, averaging 5% in 2005. Some countries experienced still higher growth rates, notably Angola, Sudan and Equatorial Guinea, all of which had recently begun extracting their petroleum reserves or had expanded their oil extraction capacity.
In a recently published analysis based on World Values Survey data, the Austrian political scientist Arno Tausch maintained that several African countries, most notably Ghana, perform quite well on scales of mass support for democracy and the market economy. The following table is projection(s) as of 2024 in terms of the peak level of GDP (nominal) and (Purchasing Power Parity) by the IMF and the World Bank.
Tausch's global value comparison based on the World Values Survey derived the following factor analytical scales: 1. The non-violent and law-abiding society 2. Democracy movement 3. Climate of personal non-violence 4. Trust in institutions 5. Happiness, good health 6. No redistributive religious fundamentalism 7. Accepting the market 8. Feminism 9. Involvement in politics 10. Optimism and engagement 11. No welfare mentality, acceptancy of the Calvinist work ethics. The spread in the performance of African countries with complete data, Tausch concluded "is really amazing". While one should be especially hopeful about the development of future democracy and the market economy in Ghana, the article suggests pessimistic tendencies for Egypt and Algeria, and especially for Africa's leading economy, South Africa. High human inequality, as measured by the UNDP's Human Development Report's "Index of Human Inequality", impairs the development of human security. Tausch also maintains that the certain recent optimism, corresponding to economic and human rights data, emerging from Africa, is reflected in the development of a civil society.
The continent is believed to hold 90% of the world's cobalt, 90% of its platinum, 50% of its gold, 98% of its chromium, 70% of its tantalite, 64% of its manganese and one-third of its uranium. The Democratic Republic of the Congo (DRC) has 70% of the world's coltan, a mineral used in the production of tantalum capacitors for electronic devices such as cell phones. The DRC also has more than 30% of the world's diamond reserves. Guinea is the world's largest exporter of bauxite. As the growth in Africa has been driven mainly by services and not manufacturing or agriculture, it has been growth without jobs and without reduction in poverty levels. In fact, the food security crisis of 2008, which took place on the heels of the global financial crisis, pushed 100 million people into food insecurity.
In recent years, China has built increasingly stronger ties with African nations and is Africa's largest trading partner. In 2007, Chinese companies invested a total of US$1 billion in Africa.
A Harvard University study led by professor Calestous Juma showed that Africa could feed itself by making the transition from importer to self-sufficiency. "African agriculture is at the crossroads; we have come to the end of a century of policies that favoured Africa's export of raw materials and importation of food. Africa is starting to focus on agricultural innovation as its new engine for regional trade and prosperity."
Electricity generation.
The main source of electricity is hydropower, which contributes significantly to the current installed capacity for energy. The Kainji Dam is a typical hydropower resource generating electricity for all the large cities in Nigeria as well as their neighbouring country, Niger. Hence, the continuous investment in the last decade, which has increased the amount of power generated.
Infrastructure.
Water resources.
Water development and management are complex in Africa due to the multiplicity of trans-boundary water resources (rivers, lakes and aquifers). Around 75% of sub-Saharan Africa falls within 53 international river basin catchments that traverse multiple borders. This particular constraint can also be converted into an opportunity if the potential for trans-boundary cooperation is harnessed in the development of the area's water resources. A multi-sectoral analysis of the Zambezi River, for example, shows that riparian cooperation could lead to a 23% increase in firm energy production without any additional investments. A number of institutional and legal frameworks for transboundary cooperation exist, such as the Zambezi River Authority, the Southern African Development Community (SADC) Protocol, Volta River Authority and the Nile Basin Commission. However, additional efforts are required to further develop political will, as well as the financial capacities and institutional frameworks needed for win-win multilateral cooperative actions and optimal solutions for all riparians.
Demographics.
 | caption= Proportion of total African population by country
 | other = yes
 | label1 = Nigeria
 | value1 = 15.38 | color1=#36A
 | label2 = Ethiopia
 | value2 = 8.37 | color2=#1A9
 | label3 = Egypt
 | value3 = 7.65 | color3=#6A5
 | label4 = Democratic Republic of the Congo
 | value4 = 6.57 | color4=#CC5
 | label5 = Tanzania
 | value5 = 4.55 | color5=#928
 | label6 = South Africa
 | value6 = 4.47 | color6=#E33
 | label7 = Kenya
 | value7 = 3.88 | color7=#E72
 | label8 = Uganda
 | value8 = 3.38 | color8=#FE3
 | label9 = Algeria
 | value9 = 3.36 | color9=#A45
Africa is considered by anthropologists to be the most genetically diverse continent as a result of being the longest inhabited. Africa's population has rapidly increased over the last 40 years, and is consequently relatively young. In some African states, more than half the population is under 25 years of age. The total number of people in Africa increased from 229 million in 1950 to 630 million in 1990. As of {{UN_Population|Year}}, the population of Africa is estimated at {{#expr:{{replace|{{UN_Population|Africa}}|,|}} / 1e9 round 1}} billion.{{UN_Population|ref}} Africa's total population surpassing other continents is fairly recent; African population surpassed Europe in the 1990s, while the Americas was overtaken sometime around the year 2000. This increase in number of babies born in Africa compared to the rest of the world is expected to reach approximately 37% in the year 2050; while in 1990 sub-Saharan Africa accounted for only 16% of the world's births.
The total fertility rate (children per woman) for Sub-Saharan Africa is 4.7 as of 2018, the highest in the world. All countries in sub-Saharan Africa had TFRs (average number of children) above replacement level in 2019 and accounted for 27.1% of global livebirths. In 2021, sub-Saharan Africa accounted for 29% of global births.
Speakers of Bantu languages (part of the Niger–Congo family) are the majority in southern, central and southeast Africa. The Bantu-speaking peoples from the Sahel progressively expanded over most of sub-Saharan Africa. But there are also several Nilotic groups in South Sudan and East Africa, the mixed Swahili people on the Swahili Coast, and a few remaining indigenous Khoisan ("San" or "Bushmen") and Pygmy peoples in Southern and Central Africa, respectively. Bantu-speaking Africans also predominate in Gabon and Equatorial Guinea, and are found in parts of southern Cameroon. In the Kalahari Desert of Southern Africa, the distinct people known as the Bushmen (also "San", closely related to, but distinct from "Hottentots") have long been present. The San are physically distinct from other Africans and are the indigenous people of southern Africa.{{citation needed|date=October 2023}} Pygmies are the pre-Bantu indigenous peoples of central Africa.
The peoples of West Africa primarily speak Niger–Congo languages, belonging mostly to its non-Bantu branches, though some Nilo-Saharan and Afro-Asiatic speaking groups are also found. The Niger–Congo-speaking Yoruba, Igbo, Fulani, Akan, and Wolof ethnic groups are the largest and most influential. In the central Sahara, Mandinka or Mande groups are most significant. Chadic-speaking groups, including the Hausa, are found in more northerly parts of the region nearest to the Sahara, and Nilo-Saharan communities, such as the Songhai, Kanuri and Zarma, are found in the eastern parts of West Africa bordering Central Africa.
The peoples of North Africa consist of three main indigenous groups: Berbers in the northwest, Egyptians in the northeast, and Nilo-Saharan-speaking peoples in the east. The Arabs who arrived in the 7th century AD introduced the Arabic language and Islam to North Africa. The Semitic Phoenicians (who founded Carthage) and Hyksos, the Indo-Iranian Alans, the Indo-European Greeks, Romans, and Vandals settled in North Africa as well. Significant Berber communities remain within Morocco and Algeria in the 21st century, while, to a lesser extent, Berber speakers are also present in some regions of Tunisia and Libya. The Berber-speaking Tuareg and other often-nomadic peoples are the principal inhabitants of the Saharan interior of North Africa. In Mauritania, there is a small but near-extinct Berber community in the north and Niger–Congo-speaking peoples in the south, though in both regions Arabic and Arab culture predominates. In Sudan, although Arabic and Arab culture predominate, it is mostly inhabited by groups that originally spoke Nilo-Saharan, such as the Nubians, Fur, Masalit and Zaghawa, who, over the centuries, have variously intermixed with migrants from the Arabian peninsula. Small communities of Afro-Asiatic-speaking Beja nomads can also be found in Egypt and Sudan.
In the Horn of Africa, some Ethiopian and Eritrean groups (like the Amhara and Tigrayans, collectively known as Habesha) speak languages from the Semitic branch of the Afro-Asiatic language family, while the Oromo and Somali speak languages from the Cushitic branch of Afro-Asiatic.
Prior to the decolonization movements of the post-World War II era, Europeans were represented in every part of Africa. Decolonization during the 1960s and 1970s often resulted in the mass emigration of white settlers—especially from Algeria and Morocco (1.6 million "pieds-noirs" in North Africa), Kenya, Congo, Rhodesia, Mozambique and Angola. Between 1975 and 1977, over a million colonials returned to Portugal alone. Nevertheless, white Africans remain an important minority in many African states, particularly Zimbabwe, Namibia, Réunion, and South Africa. The country with the largest white African population is South Africa. Dutch and British diasporas represent the largest communities of European ancestry on the continent today.
European colonization also brought sizable groups of Asians, particularly from the Indian subcontinent, to British colonies. Large Indian communities are found in South Africa, and smaller ones are present in Kenya, Tanzania, and some other southern and southeast African countries. The large Indian community in Uganda was expelled by the dictator Idi Amin in 1972, though many have since returned. The islands in the Indian Ocean are also populated primarily by people of Asian origin, often mixed with Africans and Europeans. The Malagasy people of Madagascar are an Austronesian people, but those along the coast are generally mixed with Bantu, Arab, Indian and European origins. Malay and Indian ancestries are also important components in the group of people known in South Africa as Cape Coloureds (people with origins in two or more races and continents). During the 20th century, small but economically important communities of Lebanese have also developed in the larger coastal cities of West and East Africa, respectively.
Alternative Estimates of African Population, 1–2018 AD (in thousands).
Source: Maddison and others. (University of Groningen).
Shares of Africa and World Population, 1–2020 AD (% of world total).
Source: Maddison and others (University of Groningen).
Religion.
While Africans profess a wide variety of religious beliefs, the majority of the people respect African religions or parts of them. However, in formal surveys or census, most people will identify with major religions that came from outside the continent, mainly through colonisation. There are several reasons for this, the main one being the colonial idea that African religious beliefs and practices are not good enough. Religious beliefs and statistics on religious affiliation are difficult to come by since they are often a sensitive topic for governments with mixed religious populations. According to the "World Book Encyclopedia", Islam and Christianity are the two largest religions in Africa. Islam is most prevalent in Northern Africa, and is the state religion of many North African countries, such as Algeria, where 99% of the population practices Islam. The majority of people in most governments in Southern, Southeast, and Central Africa, as well as in a sizable portion of the Horn of Africa and West Africa, identify as Christians. The Coptic Christians constitute a sizable minority in Egypt, and the Ethiopian Orthodox Church is the largest church in Ethiopia, with 36 million and 51 million adherents. According to Encyclopædia Britannica, 45% of the population are Christians, 40% are Muslims, and 10% follow traditional religions.{{citation needed|date=October 2020}} A small number of Africans are Hindu, Buddhist, Confucianist, Baháʼí, or Jewish. There is also a minority of people in Africa who are irreligious.
Languages.
By most estimates, well over a thousand languages (UNESCO has estimated around two thousand) are spoken in Africa. Most are of African origin, though some are of European or Asian origin. Africa is the most multilingual continent in the world, and it is not rare for individuals to fluently speak not only multiple African languages, but one or more European ones as well.{{Explain|reason=Africa is not one country with one single tradition of polyglots|date=February 2023}} There are four major groups indigenous to Africa:
Health.
More than 85% of individuals in Africa use traditional medicine as an alternative to often expensive allopathic medical health care and costly pharmaceutical products. The Organization of African Unity (OAU) Heads of State and Government declared the 2000s decade as the African Decade on African traditional medicine in an effort to promote The WHO African Region's adopted resolution for institutionalizing traditional medicine in health care systems across the continent. Public policy makers in the region are challenged with consideration of the importance of traditional/indigenous health systems and whether their coexistence with the modern medical and health sub-sector would improve the equitability and accessibility of health care distribution, the health status of populations, and the social-economic development of nations within sub-Saharan Africa.
AIDS in post-colonial Africa is a prevalent issue. Although the continent is home to about 15.2 percent of the world's population, more than two-thirds of the total infected worldwide—some 35 million people—were Africans, of whom 15 million have already died. Sub-Saharan Africa alone accounted for an estimated 69 percent of all people living with HIV and 70 percent of all AIDS deaths in 2011. In the countries of sub-Saharan Africa most affected, AIDS has raised death rates and lowered life expectancy among adults between the ages of 20 and 49 by about twenty years. Furthermore, the life expectancy in many parts of Africa has declined, largely as a result of the HIV/AIDS epidemic with life-expectancy in some countries reaching as low as thirty-four years.
Culture.
Some aspects of traditional African cultures have become less practised in recent years as a result of neglect and suppression by colonial and post-colonial regimes. For example, African customs were discouraged, and African languages were prohibited in mission schools. Leopold II of Belgium attempted to "civilize" Africans by discouraging polygamy and witchcraft.
Obidoh Freeborn posits that colonialism is one element that has created the character of modern African art. According to authors Douglas Fraser and Herbert M. Cole, "The precipitous alterations in the power structure wrought by colonialism were quickly followed by drastic iconographic changes in the art." Fraser and Cole assert that, in Igboland, some art objects "lack the vigor and careful craftsmanship of the earlier art objects that served traditional functions." Author Chika Okeke-Agulu states that "the racist infrastructure of British imperial enterprise forced upon the political and cultural guardians of empire a denial and suppression of an emergent sovereign Africa and modernist art." Editors F. Abiola Irele and Simon Gikandi comment that the current identity of African literature had its genesis in the "traumatic encounter between Africa and Europe." On the other hand, Mhoze Chikowero believes that Africans deployed music, dance, spirituality, and other performative cultures to (re)assert themselves as active agents and indigenous intellectuals, to unmake their colonial marginalization and reshape their own destinies.
There is now a resurgence in the attempts to rediscover and revalue African traditional cultures, under such movements as the African Renaissance, led by Thabo Mbeki, Afrocentrism, led by a group of scholars, including Molefi Asante, as well as the increasing recognition of traditional spiritualism through decriminalization of Vodou and other forms of spirituality.
As of March 2023, 98 African properties are listed by UNESCO as World Heritage Sites. Among these proprieties, 54 are cultural sites, 39 are natural sites and 5 are mixed sites. The List Of World Heritage in Danger includes 15 African sites.
Sports.
Fifty-four African countries have football teams in the Confederation of African Football. Egypt has won the African Cup seven times, and a record-making three times in a row. Cameroon, Nigeria, Morocco, Senegal, Ghana, and Algeria have advanced to the knockout stage of recent FIFA World Cups. Morocco, at the 2022 World Cup in Qatar was the first African nation to reach the semi-finals of the FIFA Men's World Cup. South Africa hosted the 2010 World Cup tournament, becoming the first African country to do so. The top clubs in each African football league play the CAF Champions League, while lower-ranked clubs compete in CAF Confederation Cup.
In recent years, the continent has progressed in terms of state-of-the-art basketball facilities, which have been built in cities such as Cairo, Dakar, Johannesburg, Kigali, Luanda and Rades. The number of African basketball players who drafted into the U.S. NBA has experienced growth in the 2010s.
Cricket is popular in some African nations. South Africa and Zimbabwe have Test status, while Kenya is the leading non-test team and previously had One-Day International cricket (ODI) status (from 10 October 1997, until 30 January 2014). The three countries jointly hosted the 2003 Cricket World Cup. Namibia is the other African country to have played in a World Cup. Morocco, in northern Africa, hosted the 2002 Morocco Cup, but the national team has never qualified for a major tournament.
Rugby is popular in several southern African nations. Namibia and Zimbabwe have appeared on multiple occasions at the Rugby World Cup, while South Africa is the most successful national team at the Rugby World Cup, having won the tournament on four occasions, in 1995, 2007, 2019, and 2023.
Traditional sports were strictly marginalised during the colonial era, and many are dying or have gone extinct under the pressure of modernisation, however lots remain popular despite not having formal governmental recognition or support.{{Rp|pages=193–194}} Some examples are Senegalese wrestling, Dambe, Nguni stick-fighting, and Savika.
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