Answer:
1. Korean War --- 1950-1953
2. Cuban Missile Crisis --- 1962
3. Soviet/Afghanistan War --- 1979-1989
4. Fall of the Berlin Wall --- 1989
5. Vietnam War --- 1965-1975
6. Truman Doctrine announced --- 1947
Step-by-step explanation:
1- The Korean War took place between 1950 and 1953. Its components were the Republic of Korea, supported by the armed forces of several countries commanded by the United States; and the Democratic People's Republic of Korea, supported by the People's Republic of China and the Soviet Union.
2- The Cuban Missile Crisis was the conflict between the United States, the Soviet Union and Cuba in October 1962, generated by the discovery by the United States of bases of Soviet medium-range nuclear missiles in Cuban territory.
3- The Soviet-Afghan war was fought between December 27, 1979 and February 15, 1989. For ten years, this war has ravaged Afghanistan. Because of the involvement of the United States and the USSR, this war is considered one of the last crises of the Cold War.
4- The Berlin Wall was a security wall that formed part of the inter-German border from August 13, 1961 to November 9, 1989.
5- The Vietnam War was fought between 1965 and 1975 to prevent the reunification of Vietnam under a socialist or communist government.
6- On March 12, 1947, US President Harry S. Truman made a statement to the US Congress, which went down in history as the so-called Truman Doctrine. According to this doctrine, it should become the foreign policy principle of the United States of America "to assist free peoples who oppose the intended subjugation by armed minorities or external pressure".