There were a few main causes of the Korean War, including: American containment, Domino Theory, the division of Korea and the expansionism of communism. This article details the history and significance of the main causes of the Korean War.
The Korean War was an important proxy war that highlighted the tensions of the United States and Soviet Union during the larger Cold War. This article details the history and significance of the Korean War.
The domino theory was a Cold War belief that if one country fell to communism, neighboring countries would soon follow, like a row of falling dominoes. This article details the history and significance of the domino theory in the Cold War.
The Truman Doctrine was a foreign policy announced in 1947 that pledged economic and military aid to countries threatened by communism. Historians view this as important to the American strategy of containment in the Cold War.