Here are the correct matches for each event of World War II:
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German invasion of Poland - start of World War II
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Attacks on Pearl Harbor - United States entry into World War II
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Storming of Normandy Beach - turning point in the war against Germany
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Dropping of the atomic bombs - surrender of Japan
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Storming of Normandy Beach - beginning of the liberation of France
If you need further explanations about these events and their significance, feel free to ask!