title: Exploring the reaction mechanism of the EU towards the United States
abstract: International disputes which involve conflicts of interests between the EU and the US have gained much traction since President Trump took office. This paper studies the reaction mechanism of the EU towards the US. It establishes a link between the study of human behaviors and international relations through constructivism before applying Maslow's hierarchy of needs to the EU. It summarizes all the EU's responses to US policies that affect its interests, thereby helping to study the EU's past fo