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Period: to
Yalta Conference meeting of FDR, Churchill, Stalin - the 'Big Three'
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Victory in Europe. Germany surrenders to the Red Army in Berlin
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Potsdam Conference - Germany was officially partitioned into four zones of occupation.
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The United States drops atomic bomb on Hiroshima (20 kiloton bomb 'Little Boy' kills 80,00
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Defeat of Germany and Japan
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Russia declares war on Japan
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The United States drops atomic bomb on Nagasaki (22 kiloton 'Fat Man' kills 70,000)
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Japanese surrender End of World War II
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Emperor surrender broadcast - VJ Day
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Stalin hostile speech - communism & capitalism were incompatible
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"Sinews of Peace" Iron Curtain Speech by Winston Churchill - "an "iron curtain" has descended on Europe"
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Truman demands Russia leave Iran
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Operation Crossroads with Test Able was the first public demonstration of America's atomic arsenal
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America's Test Baker - underwater explosion
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March 12 : Truman Doctrine - Truman declares active role in Greek Civil War
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Marshall Plan is announced setting a precedent for helping countries combat poverty, disease and malnutrition
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Rio Pact - U.S. meet 19 Latin American countries and created a security zone around the hemisphere
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Communist takeover in Czechoslovakia
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Truman's Loyalty Program created to catch Cold War spies
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Brussels Pact organized to protect Europe from communism
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Berlin Blockade begins lasting 11 months
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Berlin Blockade ends
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NATO ratified
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Russia tested its first atomic bomb
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Communist Mao Zedong takes control of China and establishes the People's Republic of China
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Chiang Kai-shek moved to Formosa and created Nationalist government
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Truman approved H-bomb development
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Korean War begins. Stalin supports North Korea who invade South Korea equipped with Soviet weapons
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Federal Civil Defense Administration establishe
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Truman fires MacArthur
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A-bombs developed by Britain
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Period: to
Nuclear Arms Race atomic test series of 11 explosions at Nevada Test Site
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RAND report on the "Vulnerability of U. S. Strategic Air Power"
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Korean War ends
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Ike's Atoms for Peace speech
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H-bomb Castle-Bravo test
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KGB established
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CIA helps overthrow unfriendly regimes in Iran and Guatemala
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Vietnam split at 17th parallel
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Warsaw Pact formed