Understanding AP World History Unit 7 requires placing the period from 1900 to the present within the long arc of human civilization. This segment of the curriculum focuses on an era defined by the acceleration of globalization, where events in one continent instantaneously impact conditions on another. The two World Wars, decolonization, and the Cold War are not isolated conflicts but interconnected phenomena that reshaped political boundaries and cultural identities.
The Collapse of Old Orders and the Interwar Period
The unit begins with the fragility of the 19th-century imperial system. The assassination of Archduke Franz Ferdinand exposed the brittle alliances and nationalist tensions that had been building across Europe and Asia. The subsequent conflict dismantled the Austro-Hungarian and Ottoman empires, creating a power vacuum that fostered radical ideologies.
The Treaty of Versailles and Economic Turmoil
Peace agreements in the 1910s failed to establish a durable stability. The economic reparations imposed on Germany created a landscape of hyperinflation and resentment. Meanwhile, the 1920s witnessed a brief period of artistic innovation and economic boom, particularly in the United States, which masked the underlying structural weaknesses of the global market.
The Second World War and the Shift in Global Power
World War II stands as the most significant event of Unit 7, marking the definitive end of European hegemony. The conflict was characterized by total war, involving the complete mobilization of society and the horrific use of atomic weapons. The defeat of the Axis powers did not just restore borders; it redrew the map of international influence.
The Holocaust fundamentally altered the global conscience regarding human rights and genocide.
The establishment of the United Nations represented a new attempt at international governance.
The entry of the United States and the Soviet Union as superpowers initiated a bipolar world order.
The Cold War and Decolonization
Following 1945, the world split along ideological lines. The Cold War was not a traditional military conflict but a struggle for ideological supremacy between capitalism and communism. This tension influenced domestic policies and foreign interventions across the globe.
The End of Empire
Unit 7 highlights the wave of decolonization that swept through Asia and Africa. Nations that had been resource colonies for centuries sought self-determination, often navigating violent struggles for independence. The retreat of European powers created a new cohort of states that sought to define themselves outside of Western frameworks, joining non-aligned movements or aligning with one superpower bloc.
Globalization and Contemporary Challenges
The latter portion of the unit examines the interconnected world of the late 20th and early 21st centuries. Technological advances in transportation and communication collapsed time and space, creating a "global village." Economic integration through trade organizations lifted millions out of poverty but also generated significant inequality.
