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German troops invaded Poland because Hitler believed that the conquest of Poland would create "living space" for the Germans. http://www.history.com/this-day-in-history/germans-invade-poland
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Because of Hitler, Britain and France decided to declare war on Germany http://www.history.com/this-day-in-history/britain-and-france-declare-war-on-germany
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The French signed the Armistice with the Nazi Germans. The French had surrendered to them. http://www.history.com/this-day-in-history/france-to-surrender
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German and British air forces fought above the United Kingdom. http://www.history.com/topics/world-war-ii/battle-of-britain
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Hitler sent his armies to invade the Soviet Union http://www.history.com/topics/world-war-ii/operation-barbarossa
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Hitler declared war on the U.S. because he thought that the U.S. would declare war on Germany first. http://www.history.com/this-day-in-history/germany-declares-war-on-the-united-states
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Japanese fighter planes attacked the American naval base in Hawaii, and ruined nearly 20 American vessels including 8 battleships. http://www.history.com/topics/world-war-ii/pearl-harbor
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This battle was a turning point on the Eastern front and was one of the most vital engagements in WWII http://www.history.com/topics/world-war-ii/battle-of-stalingrad
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There was a battle between Japan and Britain and Singapore was considered a British colony. Singapore ended up surrendering to Japan. http://www.history.com/this-day-in-history/singapore-falls-to-japan
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A United States victory against Japan, it was a naval and air battle. http://www.history.com/this-day-in-history/battle-of-midway-begins
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Hitler's forces surrendered after Hitler had earlier said that surrendering would not be an option. http://www.history.com/this-day-in-history/germans-surrender-at-stalingrad
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Germany was unsuccessful at a battle between them and the Soviet forces. Hitler ended up calling off the operations. http://www.history.com/topics/world-war-ii/battle-of-kursk
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The Battle of Normandy, American, British and Canadian forces landed on the coast of Normandy and invaded. This was the largest amphibious invasion recorded in History and needed perfect and careful planning. http://www.history.com/topics/world-war-ii/d-day
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Soviets free the remaining people of the concentration camp. This was the beginning to the end of the Holocaust. http://www.history.com/this-day-in-history/soviets-liberate-auschwitz
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An amphibious attack on Iwo Jima, Japan by the United States Marine Corps. http://www.history.com/topics/world-war-ii/battle-of-iwo-jima.
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Hitler swallowed a pill and then shot himself in the head. Germany then surrendered. http://www.history.com/this-day-in-history/adolf-hitler-commits-suicide
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Victory in Europe Day. This is when German troops in Europe finally put down their arms. http://www.history.com/this-day-in-history/victory-in-europe
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The beginning of the end of WWII. U.S. dropped its first atomic bomb on Hiroshima as revenge of Pearl Harbor. http://www.history.com/this-day-in-history/atomic-bomb-dropped-on-hiroshima
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The United States dropped an atomic bomb on Nagasaki, Japan which caused Japan to surrender. This was the second bomb dropped on a place in Japan. http://www.history.com/this-day-in-history/atomic-bomb-dropped-on-nagasaki
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Japan surrendered to the allies ending WWII. http://www.history.com/this-day-in-history/japan-surrenders