Final answer:
Decolonization after World War II was driven by changing reform movements, anti-colonial wars, nationalism, and the competing influences of the United States and the Soviet Union during the Cold War.
Step-by-step explanation:
Decolonization after World War II was primarily driven by changing reform movements, anti-colonial wars, and nationalism in various regions such as Africa, Latin America, and parts of Eurasia. Many colonies sought independence from their European rulers, who struggled with concepts of democracy versus authoritarianism.
The Cold War between the United States and the Soviet Union also influenced decolonization, as both superpowers competed for political control and resources in the newly forming countries. This competition led to proxy wars and the pouring of military and economic aid into these developing nations.