Timeline of United States history (1900–1929)

This section of the Timeline of United States history concerns events from 1900 to 1929.

U.S. territorial extent in 1900

1900 - U.S. population exceeds 75 million
1900 - Foraker Act
1900 - Gold Standard Act
1900 - U.S. helps put down Boxer Rebellion
1901 - William McKinley assassinated
1901 - Theodore Roosevelt becomes President
1901 - U.S. Steel founded by John Pierpont Morgan
1901 - Hay-Pauncefote Treaty
1902 - Drago Doctrine
1902 - First Rose Bowl game played
1902 - Newlands Reclamation Act
1903 - Great Train Robbery movie opens
1903 - Ford Motor Company formed
1903 - First World Series
1903 - Elkins Act
1903 - Big Stick Diplomacy
1903 - Hay-Bunau Varilla Treaty
1903 - Hay-Herran Treaty
1903 - Department of Commerce and Labor created
1903 - The first powered flight is made at Kitty Hawk, North Carolina
1904 - Roosevelt Corollary to Monroe Doctrine
1904 - Panama Canal Zone acquired
1905 - Niagara Falls conference
1905 - Industrial Workers of the World (IWW) formed
1906 - Susan B. Anthony dies
1906 - Algeciras Conference
1906 - Pure Food and Drug Act and Meat Inspection Act
1906 - Hepburn Act
1906 - Theodore Roosevelt negotiates Treaty of Portsmouth, receives Nobel Peace Prize

Teddy Roosevelt, the Bull Moose, led American progressives in the early 20th century

1910 - Boy Scouts of America chartered
1910 - Mann-Elkins Act
1910 - Mann Act
1911 - Supreme Court breaks up Standard Oil
1911 - First ever Indianapolis 500 is staged
1912 - RMS Titanic sinks
1912 - New Mexico and Arizona become states
1912 - Theodore Roosevelt shot, but not killed, while campaigning for the Bull Moose Party
1913 - Harriet Tubman dies
1913 - Woodrow Wilson becomes President
1913 - Federal Reserve Act
1913 - 16th Amendment
1913 - 17th Amendment
1913 - Underwood tariff
1914 - Mother's Day created
1914 - Federal Trade Commission created
1914 - Clayton Antitrust Act
1914 - ABC Powers
1915 - The Birth of a Nation opens
1915 - RMS Lusitania sunk
1916 - U.S. acquires Virgin Islands
1916 - Jeannette Rankin elected
1916 - Louis Brandeis appointed to Supreme Court
1916 - Adamson Railway Labor Act
1916 - Federal Farm Loan Act
1917 - Zimmermann telegram
1917 - U.S. enters World War I
1917 - Espionage and Sedition Acts
1917 - Lansing-Ishii Agreement
1917 - U.S. Virgin Islands purchased from Denmark
1918 - President Wilson's Fourteen Points
1919 - Treaty of Versailles ends World War I
1919 - United States Senate rejects Treaty of Versailles and League of Nations
1919 - 18th Amendment
1919-1920 Red Scare (Note: The time that this event occurred can be debated. These are the two major years.)

1920 - 19th Amendment
1920 - Sacco and Vanzetti arrested
1920 - First radio broadcast in Pittsburgh, Pennsylvania
1920 - Volstead Act
1920 - Esch-Cummins Act
1921 - Warren G. Harding becomes President
1921 - Washington Disarmament Conference of 1921
1921 - Emergency Quota Act
1922 - Fordney-McCumber tariff
1923 - Warren G. Harding dies
1923 - Calvin Coolidge becomes President
1923 - Yankee Stadium opens
1923 - Teapot Dome Scandal
1924 - Immigration Act Basic Law
1925 - Scopes trial
1925 - Nellie Tayloe Ross elected
1927 - Sacco and Vanzetti executed
1927 - Charles Lindbergh makes first trans-Atlantic flight
1927 - The Jazz Singer, the first "talkie" (motion picture with sound) is released
1927 - U.S. citizenship granted to inhabitants of U.S. Virgin Islands
1928 - Disney's Steamboat Willie opens
1928 - Kellogg-Briand Pact
1929 - Herbert Hoover becomes President
1929 - St. Valentine's Day massacre
1929 - Immigration Act
1929 - Great Depression begins
1929 - American Samoa officially becomes a U.S. territory

1860-1899	Timeline of United States history 1900–1929	1930-1949