Following World War II, the United States experienced significant political and social changes, marking the beginning of the Cold War. Domestically, there was an economic boom that led to increased consumer culture, suburbanization, and the GI Bill, which provided support for veterans. Socially, civil rights movements gained momentum, as activists sought to end racial segregation and discrimination. The fear of communism fueled McCarthyism, leading to political repression. This period also saw the establishment of the U.N. and NATO, reflecting the U.S.'s commitment to international alliances and its role as a global superpower.