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Truman Doctrine
a policy set forth by the U.S. President Harry Truman in a speech[1] on March 12, 1947 stating that the U.S. would support Greece and Turkey with economic and military aid to prevent their falling into the Soviet sphere. -
The Marshall Plan
was the American program to aid Europe where the United States gave monetary support to help rebuild European economies after the end of World War II in order to prevent the spread of Soviet Communism. -
Berlin airlift
It was the process of transporting needed supplies to East Berlin -
NATO
also called the (North) Atlantic Alliance, is an intergovernmental military alliance based on the North Atlantic Treaty which was signed on 4 April 1949. The organization constitutes a system of collective defence whereby its member states agree to mutual defense in response to an attack by any external party -
Korean War
was a war between the Republic of Korea (South Korea), supported by the United Nations, and the Democratic People's Republic of Korea (North Korea), supported by the People's Republic of China -
Polio vaccine
Two polio vaccines are used throughout the world to combat poliomyelitis (or polio). The first was developed by Jonas Salk and first tested in 1952. -
NASA established
is the agency of the United States government that is responsible for the nation's civilian space program and for aeronautics and aerospace research. Since February 2006, NASA's mission statement has been to "pioneer the future in space exploration, scientific discovery and aeronautics research. -
Sputnik
was the first artificial Earth satellite. It was a 585 mm (23 in) diameter shiny metal sphere, with four external radio antennae to broadcast radio pulses. The Soviet Union launched it into an elliptical low Earth orbit on 4 October 1957. -
Castro’s Cuban Revolution
The Cuban Revolution of 1959 began with the failed attack on the Moncada Barracks, and ended in triumph with the ousting of dictator Fulgencio Batista. -
Bay of pigs
known in Hispanic America as La Batalla de Girón, was an unsuccessful military invasion of Cuba undertaken by the paramilitary group Brigade 2506 in April 1961. -
Building the Berlin Wall
a barrier constructed by the German Democratic Republic (GDR, East Germany) starting on 13 August 1961, that completely cut off (by land) West Berlin from surrounding East Germany and from East Berlin -
6-Day War
also known as the June War, 1967 Arab-Israeli War, or Third Arab-Israeli War, was fought between June 5 and 10, 1967, by Israel and the neighboring states of Egyp