How the collapse of formal Western Imperialism during the early- to mid-1900s shaped the post-Cold War

How has the collapse of formal Western Imperialism during the early- to mid-1900s shaped the post-Cold War world of the late-1900s and early-21st century? Discuss and write on THREE (3) or FOUR (4) of the following components (depending on how many people your group has in it): 1) Economic: globalization of the world economy, its benefits and its problems 2) Political/social: decolonization, fracturing empires, and independence movements throughout the world 3) Political/military: The World Wars and the subsequent geopolitical "Cold War," along with the various "hot" wars such as Korea, Vietnam, etc. 4) Cultural/social: issues concerning race and ethnicity, including genocides and ethnic cleansing, civil rights movements around the world, etc.