Category
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1940s
File:1940s decade montage.png|Above title bar: events during World War II (1939–1945): From left to right: Troops in an LCVP landing craft approaching Omaha Beach on D-Day; Adolf Hitler visits Paris, soon after the Battle of France; The Holocaust occurs as Nazi Germany carries out a programme of systematic state-sponsored genocide, during which approximately six million European Jews are killed; The Japanese attack on the American naval base of Pearl Harbor launches the United States into the war; An Observer Corps spotter scans the skies of London during the Battle of Britain and The Blitz; T

rhythm and blues
genre of popular music that originated within African-American communities in the 1940s