Roaring Twenties By rhalfacre Feb 12, 1909 NAACP was founded Dec 1, 1913 First Assembly Line Was Made Jul 20, 1914 Universal Negro Improvement Association Jan 1, 1920 Palmer Raids Jan 5, 1920 Prohibition Begins May 1, 1920 Failure of Ratification of the Treaty of Versailles Aug 18, 1920 19th Amendment Women's suffrage Period: Nov 1, 1920 to Aug 2, 1923 Presidency of Warren G. Harding Jan 1, 1921 Sheppard Towner Act Jul 1, 1921 Chinese Communist Party Founded Nov 1, 1921 Washington Naval Conference Jan 1, 1922 Fordney-McCumber Tariff Act Feb 2, 1922 James Joyce's Ulysses is published Period: Aug 3, 1923 to Jan 1, 1928 Presidency of Calvin Coolidge Jan 1, 1924 The Immigration Act of 1924 Period: Jan 1, 1924 to Dec 30, 1924 Membership in Klu Klux Klan Peaks Aug 1, 1924 Dawes Plan Jan 1, 1925 Scopes Trial Aug 8, 1926 KKK March in Washington DC Aug 23, 1927 Sacco and Venzetti Aug 27, 1928 Kellogg-Briand Pact renounces war Oct 29, 1929 1929 Stock Market Crash