What was the main reason of cold war ?

Lasting from the end of World War II in 1945 until the early 1990s, the Cold War was one of the most significant events of the 20th century. At its heart, the Cold War was essentially a ‘face off’ or competition between the United States and the Soviet Union after World War II. Historians have identified several causes that led to the outbreak of the Cold War, including: tensions between the two nations at the end of World War II, the ideological conflict between both the United States and the Soviet Union, the emergence of nuclear weapons, and the fear of communism in the United States.

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