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Poison gas is used for the first time by Germans in an attack on the Canadian sector.
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entering the First World War
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A month long series of mutinies break out amongst the French army.
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House of Representatives to declare war on Germany
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The 18th Amendment goes into effect
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Station KDKA in Pittsburgh, Pennsylvania, initiates regular radio broadcasts, the first station to do so.
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Albert Einstein lectures in New York about his theory of relativity.
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Wage cuts and massive unemployment cause unrest and an increase in violence
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Forms the American Birth Control League
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The Supreme Court declares the 19th Amendment (votes for women) to be constitutional.
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President Harding dies of an embolism after suffering ptomaine poisoning followed by pneumonia. Coolidge is sworn in on 3 August.
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A diphtheria epidemic in Alaska captures the country's attention as dog teams drive through the winter weather to deliver antidiphtheria serum to Nome
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The Air Commerce Act regulates civil aviation; the Army Air Corps is established
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Charles Lindbergh flies The Spirit of St. Louis from New York to Paris, traveling 3600 miles in 33 and a half hours
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The Jazz Singer, starring Broadway star Al Jolson, debuts as the "first" talking picture, and its success spells the beginning of the end for silent movies
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The Ford Model A, the successor to the Model T, is produced under great secrecy
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In the "St. Valentine's Day Massacre," six gangsters from the "Bugs" Moran mob and another man are gunned down in a Chicago garage.
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Enforcement of the the Immigration Act of 1924 begins
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On "Black Thursday," 24 October, 13 million shares are sold on the New York Stock Exchange
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Italy invades southern France on June 21.
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The Soviets blunt the attack within a week and begin an offensive initiative of their own
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By mid-August, the Allies control Sicily
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Egypt took control of Suez Canal; U.S. refused to help take it back
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