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Period: to
World War II
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Germany invades Poland
Britain and France declare war on Germany; beginning of war -
The Blitz
Germany launch multiple nighttime bombing raids on Britain -
Pearl Harbor
Japan attacks United States naval base in Hawaii; U.S. joins war -
D-Day
Allies invade German-occupied Normandy, France -
Atomic Bomb
U.S. drop atomic bomb on Japanese cities Hiroshima and Nagasaki
