Covering California Standard 10.9.3, these articles will help you understand the importance of the Truman Doctrine and the Marshall Plan, which established the pattern for America's postwar policy of supplying economic and military aid to prevent the spread of Communism and the resulting economic and political competition in areas such as Southeast Asia (Korean War, Vietnam War), Cuba, and Africa.
The following showcases the Truman Doctrine, Marshall Plan, the Korean War, and the Vietnam War, explaining what each was and its impact on the Cold War. The origins of the Korean War and Vietnam War are explained as well.