The Truman Doctrine was a policy of the United States government that provided economic and military aid to countries threatened by communist takeover. The doctrine was announced by President Harry S. Truman in 1947 and was a key component of the Cold War.

The Marshall Plan was a program of economic aid to Western Europe after World War II. The plan was proposed by U.S. Secretary of State George Marshall in 1947 and provided $13 billion in aid to 16 European countries. The Marshall Plan helped to rebuild the European economy and prevent the spread of communism.

The Berlin Airlift was a military operation to supply West Berlin by air. The airlift was launched in response to the Soviet blockade of West Berlin in 1948. The airlift lasted for 11 months and delivered over 2 million tons of supplies to West Berlin. The airlift was a success and helped to prevent the Soviet Union from taking over West Berlin.

The Korean War was a civil war in Korea between the communist North and the anti-communist South. The war began in 1950 and lasted for three years. The United States and the Soviet Union supported the opposing sides in the war. The Korean War ended in a stalemate and the two Koreas remain divided today.

The Cuban Missile Crisis was a confrontation between the United States and the Soviet Union over the deployment of Soviet missiles in Cuba. The crisis began in October 1962 and lasted for 13 days. The United States and the Soviet Union came close to war during the crisis. The crisis ended when the Soviet Union agreed to remove the missiles from Cuba.

The Vietnam War was a civil war in Vietnam between the communist North and the anti-communist South. The war began in 1954 and lasted for 20 years. The United States and the Soviet Union supported the opposing sides in the war. The Vietnam War ended in 1975 with the victory of the communist North.

The Cold War was a period of tension and rivalry between the United States and the Soviet Union. The Cold War began after World War II and lasted for 45 years. The Cold War was fought primarily through political, economic, and psychological means. The Cold War ended in 1991 with the collapse of the Soviet Union.

The policy of containment was a policy of preventing the spread of communism. The policy was adopted by the United States government in the late 1940s. The policy of containment was implemented through a variety of means, including economic aid, military assistance, and diplomatic pressure.

The Domino Theory was a theory that the fall of one communist country would lead to the fall of other communist countries. The theory was popular in the United States government in the 1950s and 1960s. The Domino Theory was used to justify the United States' involvement in the Vietnam War.

The United Nations was a forum for negotiations between the United States and the Soviet Union. The United Nations also provided economic aid to developing countries and promoted democracy and human rights.

The United States was the leader of the anti-communist bloc. The United States provided economic aid to Western Europe, military assistance to anti-communist governments, and promoted democracy and human rights in developing countries.

The Soviet Union was the leader of the communist bloc. The Soviet Union provided economic aid to Eastern Europe, military assistance to communist governments, and promoted communism in developing countries.

The main causes of the Cold War were the ideological differences between the United States and the Soviet Union. The United States was a capitalist democracy, while the Soviet Union was a communist dictatorship. The two countries had very different views on how society should be organized.

The main effects of the Cold War were the division of the world into two blocs, the arms race between the United States and the Soviet Union, the spread of communism in Eastern Europe and Asia, and the negative impact of the Cold War on the global economy.