* Demobilization: The United States had to demobilize its military forces, which had grown to over 12 million members during the war. This process was complicated by the fact that many soldiers wanted to stay in the military, while others were eager to return to civilian life.
* Economic reconversion: The United States had to convert its economy from a wartime footing to a peacetime footing. This process was challenging, as many industries had been disrupted by the war.
* The Cold War: The United States and the Soviet Union emerged from World War II as the world's two superpowers. The two countries quickly became embroiled in a Cold War, a global competition for influence and power.
* Decolonization: The United States had to deal with the rising tide of decolonization in the aftermath of World War II. This process saw the former colonies of European powers gain independence, often after violent struggles.
* Civil rights: The United States continued to struggle with the issue of civil rights for African Americans after World War II. Despite the progress that had been made during the war, African Americans were still subject to discrimination and segregation.
