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Nazis invade poland
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Britain, Australia, New Zealand and France declare war on Germany
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Royal Air Force attacks the German Navy
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United States proclaims its neutrality
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Canada declares war on Germany•The Battle of the Atlantic begins
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Rationing begins in UK
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Germans bomb Scapa Flow naval base near Scotland
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Germany invades Denmark and Norway
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Nazis invade France, Belgium, Luxembourg and the Netherlands•Winston Churchill becomes British Prime Minister