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Germany invades Poland, initiating World War II in Europe.
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Japan bombs Pearl Harbor
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The United States declares war on Japan, entering World War II. Japanese troops land in the Philippines, French Indochina (Vietnam, Laos, Cambodia), and British Singapore. By April 1942, the Philippines, Indochina, and Singapore are under Japanese occupat
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Nazi Germany and its Axis partners declare war on the United States.
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British and U.S. navies halt the Japanese naval advance in the central Pacific at Midway.
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U.S. and British troops land at several points on the beaches of Algeria and Morocco in French North Africa.
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Axis forces in Tunisia surrender to the Allies, ending the North African campaign.
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The United States drops an atomic bomb on Hiroshima.
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The United States drops an atomic bomb on Nagasaki.
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Having agreed in principle to unconditional surrender on August 14, 1945, Japan formally surrenders, ending World War II.