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The first question required the understanding of the Containment policy, its success by 1953 and the supporters and critics. the containment policy was used by the US to prevent the spread of communism by the Soviet Union. the success was the ability to stop the spread of communism across the globe especially in Korea. the main supporter was Truman and the critics included those opposed to the policy such as the Commerce secretary. the second question was on the reasons as to why the anti-Communist hysteria swept the country. among other reasons, they included collapsing the Soviet America alliance emergence of Soviet Union that was after spreading the communism. it led to development of domestic and foreign policies such as the containment. finally it led to improvement in economic and political development.