Containment Policy was a strategic approach used by the United States during the Cold War to prevent the spread of communism. This policy aimed to limit the influence of the Soviet Union and its allies by supporting countries resisting communist movements. It involved diplomatic, military, and economic measures to contain potential threats. Key events related to the Containment Policy include the Truman Doctrine, which provided aid to countries like Greece and Turkey, and the Marshall Plan, which helped rebuild European economies. The policy shaped U.S. foreign relations and led to various conflicts, including the Korean War and the Vietnam War.