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The letter describes the feasibility of atomic power, the potential use of atomic bombs and warns that Germany is already working on atomic research.
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Japanese forces attack the Unites States Naval base at Pearl Harbor, Hawaii, thus bringing the United States into World War Two.
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To decide which Japanese cities to target with the atomic bomb.
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Ends the war in Europe. US is still at war with Japan.
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The Trinity test explosion of the world’s first atomic bomb occurred at Alamogordo, New Mexico.
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Called for the unconditional surrender of Japan, was issued by the United States, Britain, and China. While not specifying that the U.S. now had atomic weapons, the Declaration asserted that unless Japan surrendered, it would face "prompt and utter destruction.” The Japanese government chose to respond with silence.
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A 15 kiloton atomic bomb nicknamed Little Boy over the Japanese city of Hiroshima. Approximately 130,000 people died in the explosion and the immediate after-effects of the attack.
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A 21 kiloton atomic bomb named Fat Man was dropped on the Japanese city of Nagasaki. The original target was the city of Kokura.
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Japanese Emperor Hirohito decides that Japan must accept the Potsdam Declaration and surrender.
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In a recorded radio address, Emperor Hirohito announced to his people and to the world that Japan would surrender to the Allies.
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