Why did the Cold War develop?

The Cold War developed due to ideological, political, and economic differences between the United States and the Soviet Union after World War II. The U.S. promoted capitalism and democracy, while the Soviet Union advocated for communism and a one-party state. The power vacuum left in Europe and the spread of nuclear weapons intensified distrust and competition, leading to a prolonged period of geopolitical tension. This rivalry manifested in various conflicts and proxy wars around the globe, as each superpower sought to expand its influence.