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The United States drops atomic bomb on Hiroshima (20 kiloton bomb 'Little Boy' kills 80,000)
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Truman approved H-bomb development
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Warsaw Pact formed
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A-bombs developed by France
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U.S. Marines sent to Dominican Republic to fight Communism
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President Nixon extends Vietnam War to Cambodia
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North Vietnam defeats South Vietnam which falls to Communist forces
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Polish shipyard workers strike Solidarity Union formed. Strike leader Lech Walesa is elected as the head of Solidarity
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Mikhail Gorbachev becomes leader of the Soviet Union initiating a campaign of openness called "glasnost" and restructuring called "perestroika"
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Boris Yeltsin elected as President of Russia
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End of Soviet Union and the Cold War Ends