THE COLD WARTIME:Began with the ending of the World War II.CAUSES:Caused by conflicts between the U.S.and the USSR(苏联)arose basically from their separate concepts of postwar(战后的)world order.THE DIFFERENT POLICY:During the Cold War,the U.S.government would support any country which said it was fighting against communism.And the Soviet Union believed it should rapidly build up its strength for the final struggle against capitalism(资本主义).The Containment Policy(遏制政策)ORIGIN:George Kennan proposed the containment policy on February 22,1946.the containment policy became the official policy towards the Soviet Union until 1989.The Truman Doctrine(杜鲁门主义):the U.S government should support any country which said it was fighting against communism.It was put forward by the U.S.President Truman in 1947.The Marshall Plan(马歇尔计划):In order to protect Western Europe from possible Soviet expansion,the U.S.decided to offer Western European countries economic aid.It was announced by Secretary of State(国务卿)George Marshall on June 5,1947.The Red Scare:the Red Scare happened in America in1974.Because the fear of communism was also demonstrated inside America during the postwar era.McCarthyism(麦卡锡主义):McCarthy used“big lie”tactic(策略)to persecute progressive people.He said he had the names of over 200 Communists in the State Department(国务院).His lies caused full-scale,anti-Communist hysteria in America and frightened a large number of ordinary Americans.Anti-communistThe Hot WarThe Korean War(1950-1953):The Korean War was a result of Cold War friction.After World War II,Korea was divided at 38th parallel into the Soviet-supported north and the American-supported south.The Vietnam War:The Vietnam War was the longest and most unpopular war in American history.Many people lost their lives during the war.The Cuban Missile Crisis(古巴导弹危机):The Cuban missile crisis known as the October crisis in Cuba and the Caribbean(加勒比海)crisis in the former USSRwas a 14-day confrontation in October 1962 between the Soviet Union and Cuba on one side and the United States on the other side.Dtente 缓和As Nixon distanced America from the Vietnam War,he searched for a better-focused foreign policy.He with his Secretary of State began a kind of balance-of-power diplomacy by reducing tensions between the United States and the two major communist nations:China and the Soviet Union.He visited Beijing in February 1972,and it led to the establishment of diplomatic relations between China and USA in 1979.Thank you!。