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1970s energy crisis: Shortages of petroleum caused by Arab Oil Embargo and Iranian Revolution
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American Civil War: Period in 1861–1865 when the North (Union states) and South (Confederate states) fought over slavery and the Confederates’ desire to secede from the Union
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American Revolution: Thirteen colonies in North America that broke free from British rule
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Apollo 11: First manned landing on the moon, in July 1969
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Assassination of Abraham Lincoln: April 14, 1865, in Washington DC. Lincoln was shot by John Wilkes Booth
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Attack on Pearl Harbor: Surprise Japanese attack on Hawaii, on December 7, 1941, which led to the United States’ involvement in WWII
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Bay of Pigs Invasion: Failed attempt by the CIA to overthrow Fidel Castro
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Chernobyl disaster: Nuclear accident in the Ukraine on April 26, 1986
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Crusades: Religious wars by the Catholic Church to take back the Holy Lands
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Easter Rising: Irish insurrection in 1916 that tried to end British rule in Ireland
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Fall of the Berlin Wall: On November 9, 1989, East Germany announced that citizens could visit West Gemany; this led to German reunification
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Holocaust: Genocide of six million Jews and millions of others during World War II in Europe
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Hundred Years’ War: Conflicts between England and France between 1337 and 1453
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Louisiana Purchase: The purchase of the vast Louisiana Territory by the United States from France in 1803
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Manhattan Project: The program by the United States, United Kingdom, and Canada that developed the first atomic bomb
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Russian Revolution: 1917 revolutions in Russia that ended the Russian Empire
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September 11 attacks: Four hijacked planes attacked targets in the New York City and Washington, D.C., areas in 2001
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Thirty Years’ War: Series of wars fought in Europe between 1618 and 1648, one of the longest and most destructive wars in European history