Roaring Twenties By facebooker_1691925197723631 Jan 2, 1920 Palmer Raids Mar 19, 1920 Senate Rejects League of Nations Aug 18, 1920 19th Amendment Ratified Nov 2, 1920 Warren Harding Elected May 19, 1921 Emergency Quota Act Jul 30, 1921 Insulin Discovered Sep 1, 1921 Polygraph Invented May 30, 1922 Lincoln Memorial Opened Oct 18, 1922 BBC Founded Nov 4, 1922 King Tut's Tomb Discovered Mar 3, 1923 First Issue of Time Magazine Published Apr 18, 1923 Yankee Stadium Opened Aug 2, 1923 Harding Dies Aug 3, 1923 Coolidge Sworn into Office Nov 20, 1923 Traffic Signal Invented Jan 21, 1924 Lenin Dies Jan 25, 1924 First Winter Olympics Nov 4, 1924 Calvin Coolidge Elected President Apr 10, 1925 Great Gatsby Published Jul 21, 1925 John Scopes Trial Decided Aug 8, 1925 Ku Klux Klan March Mar 14, 1926 Liquid Rocket Invented Oct 14, 1926 Winnie the Pooh Published Oct 31, 1926 Houdini Dies May 27, 1927 Lindbergh Lands in Paris Jun 10, 1927 Earle Nelson Arrested Aug 23, 1927 Sacco & Vanzetti Executed Sep 30, 1927 Babe Ruth Breaks Homerun Record Oct 6, 1927 The Jazz Singer is Released Oct 20, 1927 Ford Model A begins Production Aug 27, 1928 Kellogg-Briand Pact Signed Sep 7, 1928 Television Invented Nov 6, 1928 Herber Hoover Elected Nov 18, 1928 Steamboat Willie Produced Feb 14, 1929 Penicillin Invented Feb 14, 1929 St. Valentines Day Massacre Oct 29, 1929 Stock Market Crash