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Explanation- This wall was used to stop East Germans from escaping to a better life style. 

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Explanation- This wall was used to stop East Germans from escaping to a better life style. 

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Explanation- This was a competition between the U.S and USSR to be the first into space. 

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Explanation- This was a competition between the U.S and USSR to be the first into space. 

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Explanation- An invisible line that divided Western Europe and Eastern Europe after WWII. 

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Explanation- An invisible line that divided Western Europe and Eastern Europe after WWII. 

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Explanation- A movement led by Fidel Castro in Cuba they were trying to overthrow the dictator Fulgencio Batista. 

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Explanation- A movement led by Fidel Castro in Cuba they were trying to overthrow the dictator Fulgencio Batista. 

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Explanation- A idea that is the South Vietnam fell into Communism then other countries in Asia would fall too. 

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Explanation- A idea that is the South Vietnam fell into Communism then other countries in Asia would fall too. 

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Explanation- The united states government is responsible for NASA and for aeronautics and aero space research. 

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Explanation- The united states government is responsible for NASA and for aeronautics and aero space research. 

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Explanation- The U.S. and the USSR emerged as the most dominant and influential in the world after WWII. 

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Explanation- The U.S. and the USSR emerged as the most dominant and influential in the world after WWII. 

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Explanation- An organization made to promote international peace, security, and cooperation. 

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Explanation- An organization made to promote international peace, security, and cooperation. 

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Explanation- A competition between the U.S. and the USSR to see who could build the most destructive nuclear weapons.

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Explanation- A competition between the U.S. and the USSR to see who could build the most destructive nuclear weapons.

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Explanation- A war between North and South Korea 

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Explanation- A war between North and South Korea 

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Explanation- Military alliance formed in 1955. 

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Explanation- Military alliance formed in 1955. 

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Explanation- A war fought for complete control over Vietnam between communist and anti-communist. 

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Explanation- A war fought for complete control over Vietnam between communist and anti-communist. 

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Explanation- A military alliance formed in 1949 to provide mutual help if  Great Britain, France, other Western European nations, the U.S., and Canada were to be attacked

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Explanation- A military alliance formed in 1949 to provide mutual help if  Great Britain, France, other Western European nations, the U.S., and Canada were to be attacked

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Explanation- Declaration issued by President Harry S. Truman which said that the U.S. would give them money to countries that were threatened by the communist expansion. 

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Explanation- Declaration issued by President Harry S. Truman which said that the U.S. would give them money to countries that were threatened by the communist expansion. 

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Explanation- The potential use of nuclear weapons to kill people in teh event of war. 

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Explanation- The potential use of nuclear weapons to kill people in teh event of war. 