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Nazis take Czechoslovakia.
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Spanish Civil war ends.
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Nazis sign 'Pact of Steel' with Italy.
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Nazis and Soviets sign Pact.
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Britain and Poland sign a Mutual Assistance Treaty.
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British fleet mobilizes; Civilian evacuations begin from London.
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Nazis invade Poland.
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Britain, France, Australia and New Zealand declare war on Germany.
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British Royal Air Force attacks the German Navy.
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United States proclaims its neutrality; German troops cross the Vistula River in Poland.
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Canada declares war on Germany; Battle of the Atlantic begins.
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Soviets invade Poland.
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Warsaw surrenders to Nazis; Reinhard Heydrich becomes the leader of new Reich Main Security Office (RSHA).
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Nazis and Soviets divide up Poland.
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Assassination attempt on Hitler fails.
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Soviets attack Finland.
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Soviet Union expelled from the League of Nations.
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Rationing begins in Britain
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Finland signs a peace treaty with Soviets.
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Germans bomb Scapa Flow naval base near Scotland.
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Nazis invade Denmark and Norway.
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Nazis invade France, Belgium, Luxembourg and the Netherlands; Winston Churchill becomes British Prime Minister.
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Holland surrenders to the Nazis.
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Evacuation of Allied troops from Dunkirk begins.
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Belgium surrenders to the Nazis.
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Germans bomb Paris
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Norway surrenders to the Nazis; Italy declares war on Britain and France.
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German U-boats attack merchant ships in the Atlantic.
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Roosevelt re-elected as U.S. president.
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US declares war on Japan