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Date |
Event(s) |
| 1 | 1917 | - 6 Apr 1917: U.S. enters World War I,The United States declared war on Germany, officially entering World War I.
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| 2 | 1918 | - 1 Jan 1918: Spanish Flu pandemic,The first cases of the devastating influenza pandemic were reported in the U.S.
- 11 Nov 1918: Armistice Day,An armistice was signed, ending World War I.
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| 3 | 1919 | - 1 Jan 1919: 18th Amendment ratified,The 18th Amendment, which prohibited the manufacture, sale, or transportation of alcoholic beverages, was ratified.
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| 4 | 1920 | - 19 Jan 1920: Prohibition begins,The Volstead Act went into effect, implementing the 18th Amendment.
- 18 Aug 1920: 19th Amendment ratified,The 19th Amendment was ratified, granting American women the right to vote.
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| 5 | 1921 | - 1 Jan 1921: Emergency Quota Act,Congress passed a law limiting the number of immigrants from any country to 3% of the people from that country already living in the U.S.
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| 6 | 1924 | - 1 Jan 1924: Immigration Act of 1924,A law that further restricted immigration, establishing a national origins quota.
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| 7 | 1925 | - 21 Jan 1925: Scopes "Monkey" Trial,A high school teacher, John Scopes, was tried for teaching evolution in a highly publicized trial.
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| 8 | 1927 | - 1 Jan 1927: Charles Lindbergh's solo flight,Charles Lindbergh completed the first solo, nonstop transatlantic flight from New York to Paris.
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| 9 | 1929 | - 29 Oct 1929: Stock Market Crash,Known as "Black Tuesday," the stock market crashed, beginning the Great Depression.
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| 10 | 1931 | - 1 Jan 1931: Empire State Building opens,The Empire State Building officially opened in New York City.
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1917 - Aft 1930 (> 14 years)