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Germany attacks Poland
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On 1 September 1939 Germany invaded Poland, and two days later Britain and France declared war on Germany because they had a treaty with Poland in which they had undertaken to help Poland if its independence was threatened by force.
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The attack on Pearl Harbor (called Hawaii Operation or Operation AI[7][8] by the Japanese
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A declaration of war is a formal declaration issued by a national government indicating that a state of war exists between that nation and another.
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The Normandy landings, codenamed Operation Neptune, were the landing operations of the Allied invasion of Normandy, in Operation Overlord, during World War II.
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The German Instrument of Surrender
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During the final stages of World War II in 1945, the Allies of World War II conducted two atomic bombings against the cities of Hiroshima and Nagasaki in Japan.
