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This was the first world war that started in 1914 and ended in 1918, the United States didn't get involved until 1917. This war was started by the conflict between two coalitions the Allies and the Central powers. This war ended with Germany signing an armistice agreement with the Allies.
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In 1920, the 19th amendment was ratified which gave women the right to vote after decades woman's suffrage.
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This was a economic downturn after the stock market crashed and resulted in high rates of unemployment and poverty in the country.
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This was programs enacted by President Roosevelt to combat Great Depression and help provide economic recovery, immediate relief, and financial reforms.
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This war was between the Allies and the Axis Powers and started in 1939 and ended in 1945. United States got involved in 1941 after Japan attacked Pearl Harbor. This ended with Japan surrendering.
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This was a group founded after World War II consisting of 51 countries to prevent future wars.
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This was a social movement that started in 1954 and ended in 1968, to abolish segregation and discrimination against colored people. This was also to get equal rights for African Americans.
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This was a war that started with the Geneva accords that divided the country and then in 1964 there was the Gulf of Tonkin incident when there were claims from U.S. destroyers that they were fired on by North Vietnamese forces which led to U.S. involvement. This was lasted from 1955-1975. The United States withdrew in 1973 and the Fall of Saigon concluded the war.
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In 1969, Buzz Aldwin and Neil Armstrong landed on the moon making them the first humans to walk on the moon.
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This was a political scandal that involved Richard Nixon when 5 people broke into the offices of Democratic National Committee and this investigation led to the exposure of abuses from the Nixon administration and Nixon himself. This caused Nixon to have to resign and be the first president to do that in history.
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This was a war from 1985-1991 between the United States and the Soviet Union because of tensions after World War II. This ended with the dissolve of the Soviet Union.