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House Un-American Activities Committee formed
An investigative committee of the U.S. house of Representatives. Originally created in 1938 to inquire into subversive activities in the U.S., it was reestablished in 1945 as the Committee on Un-American Activities, renamed in 1969 as the Committee on Internal Security, and abolished in 1975. -
Yalta Conference
A meeting between the Allied leaders Winston Churchill, Franklin Roosevelt, and Joesph Stalin Yalta, which is a Crimean port on the Black Sea. They planned the final stages of World War II and agreed on how they would divide up Europe. -
Day Yalta Conference ended
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Potsdam Conference
It was a meeting held in Potsdam in the summer of 1945. The US, Soviet, and British leaders attended and established the principles for the Allied occupation of Germany after World War II was over. -
United Nations Formation
An international organization of countries set up in 1945, in succession to the League of Nations, to promote international peace, security, and cooperation. -
Truman Doctrine
The principle that the US should give aid to other countries or people that are threatened by the Soviet forces or communist places. It was introduced in 1947 by President Truman in a speech to Congress seeking aid for Greece and Turkey. -
Marshall Plan
A finanical aid program. Sponsored by the US, and designed to help the economies of western European countries after World War II. It was introduced by Secretary of State George C. Marshall and it was passed by Congress in 1948. -
Berlin Airlift
It was an airlift in 1948 that supplied food, fuel, medicine, and other supplies to citizens of west Berlin. -
NATO Formation
It stands for North Atlantic Treaty Organization. Which is an international organization created in 1949 by the North Atlantic Treaty for purposes of collective security. -
Berlin Airlift Ends.
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North Korean invasion of South Korea
The Korean War was a conflict fought on the Korean Peninsula. Initially the war was between South Korea and North Korea, but it soon developed into an international war involving the United States and 19 other nations. The United States sent troops to South Korea as. Which sought to repel the Communist aggression of North Korea. -
Era of McCarthyism begins
McCarthyism is the practice of making accusations of disloyalty, subversion, or treason without proper regard for evidence. The term has its origins in the period in the United States known as the Second Red Scare, lasting roughly from the late 1940s to the late 1950s. -
Rosenberg Execution
The Rosenbergs were accused of persuading Ethel's brother, David Greenglass, to provide them with confidential U.S. military information gained from his involvement in the development of nuclear weapons. He then funneled the top-secret information on to Soviet intelligence. They were found guilty of relaying U.S. military secrets to the Soviets, the Rosenbergs were the first U.S. civilians to be sentenced to death for espionage. -
Armistice Signed Ending Korean War
After 2 years and 17 days of secret, difficult negotiations—during a war that lasted 37 months—an armistice was signed on July 27, 1953, finally halting the fighting in the Korean War. -
Warsaw Pact Formation
A treaty of mutual defense and military aid signed at Warsaw on May 14, 1955, by communist states of Europe under Soviet influence, in response to the admission of West Germany to NATO. The pact was dissolved in 1991. -
Sputnik 1 Launched
Sputnik helped to identify the upper atmospheric layer's density, through measuring the satellite's orbital changes. It also provided data on radio-signal distribution in the ionosphere. Pressurized nitrogen in the satellite's body provided the first opportunity for meteoroid detection. If a meteoroid penetrated the satellite's outer hull, it would be detected by the temperature data sent back to Earth -
First Man in Space
Yuri Alekseyevich GagarinHero of the Soviet Union, was a Soviet cosmonaut. On 12 April 1961, he became the first human in outer space and the first to orbit the Earth. -
First American in Space
Alan Bartlett Shepard, Jr. was the second person and the first American in space. He later commanded the Apollo 14 mission, and was the fifth person to walk on the moon. -
Creation of the Berlin Wall
A guarded concrete wall, 28 miles (45 km), with minefields and controlled checkpoints, erected across Berlin by East Germany in 1961. -
First Man on the Moon
Neil Alden Armstrong is an American aviator and a former astronaut, test pilot, aerospace engineer, university professor, and United States Naval Aviator. He was the first person to set foot on the Moon.
