* The Cold War: The ideological conflict between the United States and the Soviet Union and their respective allies.
* Decolonization: The process of European colonies gaining independence after the war.
* The creation of the United Nations: An international organization whose purpose is to maintain peace and security.
* The rise of nationalism and communism.
Economic
* The Marshall Plan: A program of economic aid from the United States to Europe after the war.
* The establishment of the Bretton Woods system: A system of international economic management that set up the International Monetary Fund and the World Bank.
* The rise of consumerism and the growth of the middle class.
Social
* The baby boom: A period of high birth rates in the United States and other developed countries after the war.
* The increased role of women in society: Women gained new opportunities for education, employment, and political participation.
* The civil rights movement: A struggle for equal rights for African Americans in the United States.
* The rise of feminism and the fight for gender equality.
Technological
* The development of new technologies such as the computer, the jet engine, and nuclear energy.
* The acceleration of scientific research and development.
* The space race between the United States and the Soviet Union.
Environmental
* The destruction of wildlife and habitats due to the war and its aftermath.
* The increased use of synthetic materials such as plastics and nylon.
* The rise of environmentalism and the fight for sustainability.