Timeline of United States history ( 1900 -- 29 ) - wikipedia Timeline of United States history ( 1900 -- 29 ) This section of the Timeline of United States history concerns events from 1900 to 1929. U.S. territorial extent in 1900 Contents 1 1900s 2 1910s 3 1920s 4 See also 1900s 1900s in the United States : 1900, 1901, 1902, 1903, 1904, 1905, 1906, 1907, 1908, 1909. 1900 -- U.S. population exceeds 75 million 1900 -- U.S. helps put down Boxer Rebellion 1900 -- 1900 Galveston hurricane 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 -- Harley - Davidson Motor Company created 1903 -- Ford Motor Company formed 1903 -- First World Series 1903 -- Elkins Act 1903 -- Big Stick Diplomacy 1903 -- Hay -- Bunau - Varilla Treaty 1903 -- Hay -- Herrán Treaty 1903 -- Department of Commerce and Labor created 1903 -- The Wright brothers make their first powered flight in the Wright Flyer 1904 -- Roosevelt Corollary to Monroe Doctrine 1904 -- Panama Canal Zone acquired 1904 -- Worlds Fair St. Louis 1905 -- Niagara Falls conference 1905 -- Industrial Workers of the World 1905 - Einstein 's Theory of Relativity 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 1906 -- San Francisco earthquake 1907 -- Oklahoma becomes a state 1907 -- Gentlemen 's Agreement 1907 -- Coal mine explodes in Monongah, West Virginia, killing at least 361. Worst industrial accident in American history. 1908 -- Ford Model T appears on market 1908 -- Root -- Takahira Agreement 1908 -- Federal Bureau of Investigation established 1908 -- Aldrich -- Vreeland Act 1909 -- The U.S. penny is changed to the Abraham Lincoln design 1909 -- William Howard Taft becomes President 1909 -- Robert Peary claims to have reached the North Pole 1909 -- NAACP founded by W.E.B. Du Bois 1909 -- Payne -- Aldrich Tariff Act 1909 -- Taft implements Dollar Diplomacy 1909 -- Pinchot -- Ballinger controversy 1910s 1910s in the United States : 1910, 1911, 1912, 1913, 1914, 1915, 1916, 1917, 1918, 1919. 1910 -- Mann -- Elkins Act 1910 -- Mann Act 1911 -- Supreme Court breaks up Standard Oil 1911 -- Triangle Shirtwaist fire 1911 -- First ever Indianapolis 500 is staged ; Ray Harroun is the first winner 1912 -- RMS Titanic sinks 1912 -- New Mexico and Arizona become states 1912 -- Girl Scouts of the USA was started by Juliette Gordon Low 1912 -- Theodore Roosevelt shot, but not killed, while campaigning for the Bull Moose Party 1913 -- Woodrow Wilson becomes President 1913 -- 16th Amendment, establishing an income tax 1913 -- End of the Philippine -- American War 1913 -- The Armory Show opens in New York City introducing Modern art both American and European to the American public. 1913 -- 17th Amendment, establishing direct election of U.S. Senators. 1913 -- Underwood Tariff 1913 -- Henry Ford develops the modern assembly line 1914 -- Mother 's Day established as a national holiday 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 first woman elected to U.S. congress 1916 -- Louis Brandeis appointed to Supreme Court 1916 -- Adamson Railway Labor Act 1916 -- Federal Farm Loan Act 1916 -- Jone Act 1917 -- Zimmermann Telegram 1917 -- U.S. enters World War I 1917 -- Espionage and Sedition Acts 1917 -- Lansing -- Ishii Agreement 1917 -- NHL 1917 -- U.S. Virgin Islands purchased from Denmark 1917 -- 1920 -- First Red Scare, marked by a widespread fear of Bolshevism and anarchism 1918 -- President Wilson 's Fourteen Points, which assures citizens that the Great War was being fought for a moral cause and for postwar peace in Europe 1918 -- Treaty of Versailles ends World War I 1919 -- Theodore Roosevelt dies 1919 -- United States Senate rejects Treaty of Versailles and League of Nations 1919 -- 18th Amendment, establishing Prohibition 1919 -- Black Sox Scandal during that year 's World Series, wherein the fallout lasts for decades 1920s 1920s in the United States : 1920, 1921, 1922, 1923, 1924, 1925, 1926, 1927, 1928, 1929. 1920 -- 19th Amendment, granting women the right to vote 1920 -- Sacco and Vanzetti arrested 1920 -- First radio broadcasts in Pittsburgh and Detroit 1920 -- Volstead Act 1920 -- Esch -- Cummins Act 1920 -- NFL 1921 -- Warren G. Harding becomes President 1921 -- Washington Disarmament Conference of 1921 1921 -- Emergency Quota Act 1922 -- Fordney -- McCumber Tariff 1923 -- President Warren G. Harding dies ; Calvin Coolidge succeeds him 1923 -- Teapot Dome scandal 1924 -- Immigration Act Basic Law 1924 -- J. Edgar Hoover is appointed director of the Bureau of Investigation -- predecessor to the FBI. 1925 -- Scopes Trial, whose outcome found that the teaching of evolution in the classroom `` does not violate church and state or state religion laws but instead, merely prohibits the teaching of evolution on the grounds of intellectual disagreement '' 1925 -- Nellie Tayloe Ross elected governor of Wyoming 1925 -- WSM broadcasts the Grand Ole Opry for the first time. 1926 -- NBC founded as the U.S. 's first major broadcast network 1927 -- Sacco and Vanzetti executed, seven years after they were convicted of murdering two men during an armed robbery in Massachusetts 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 1927 -- Columbia Broadcasting System ( later called CBS ) becomes second national radio network in the U.S. 1928 -- Disney 's Steamboat Willie opens, the first animated picture to feature Mickey Mouse 1928 -- Kellogg -- Briand Pact 1928 -- Amelia Earhart becomes the first woman to fly solo across the Atlantic Ocean. 1929 -- Herbert Hoover becomes President 1929 -- St. Valentine 's Day Massacre 1929 -- Immigration Act 1929 -- The Dow Jones Industrial Average plummets a record 68 points over a two - day period, setting off the Wall Street Crash of 1929 and triggering the Great Depression 1929 -- The Museum of Modern Art opens to the public in New York City 1929 -- American Samoa officially becomes a U.S. territory 1929 -- The Great Depression Starts See also History of the United States ( 1865 -- 1918 ) History of the United States ( 1918 -- 1945 ) Timeline of United States history Period Before 1760 American Revolution ( 1760 -- 1789 ) 1790 -- 1819 1820 -- 1859 1860 -- 1899 1900 -- 1929 1930 -- 1949 1950 -- 1969 1970 -- 1989 1990 -- present Topic Diplomatic history Military operations Related History of the United States Outline of United States history Years in the United States United States history timelines Retrieved from `` https://en.wikipedia.org/w/index.php?title=Timeline_of_United_States_history_(1900 -- 29 ) &oldid = 837281859 '' Categories : Timelines of United States history by period 1900s in the United States 1910s in the United States 1920s in the United States History of the United States ( 1865 -- 1918 ) History of the United States ( 1918 -- 45 ) Talk Contents About Wikipedia Add links This page was last edited on 19 April 2018, at 21 : 09. 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Question: what was going on in the world in 1900
Answer: U.S. population exceeds 75 million