US HISTORY TIMELINE By HairyMole95 1867 Purchase of Alaska 1880 U.S. trade abroad increases 1882 Chinese Exclusion Act 1896 Plessy v. Ferguson/ Era of Jim Crow legalized segregation 1898 Age of U.S. imperialism begins/ Spanish-American War, territory gained/ Hawaii annexed 1899 Open Door Policy 1900 T.Roosevelt "Big Stick" Diplomacy 1901 McKinley is assassinated/ T.R. becomes president 1904 Teddy Roosevelt elected/ Roosevelt Corollary to the Monroe Doctrine is established/ U.S. begins building the Panama Canal, with a 99 year lease 1906 T. Roosevelt's SQUARE DEAL/ Meat Inspection Act 1907 Gentlemen's Agreement 1908 William Howard Taft is elected President Period: 1910 to 1930 Great Migration of African Americans to the North 1913 16th and 17th Amendments added to Constitution/ Federal Reserve Act 1914 Clayton Antitrust Act- strengthens the Sherman Antitrust Act/ World War I erupts 1915 Germans sinking the Lusitania, American passengers die 1916 National Park Service created/ U.S. intervention in Mexico 1917 Zimmerman Note/ U.S. enters World War I, 4.8 million Americans served/ Selective Service Act 1918 World War I ends; Woodrow Wilson writes The Fourteen Points/ 51,000 American casualties/ Flu Pandemic 500 million people infected worldwide Period: 1918 to 1921 "Return to Normalcy"/ U.S. becomes isolationist, Rise of nativism 1919 18th Amendment: Prohibition/ U.S. senate rejects the Treaty of Versailles/ League of Nations formed, U.S does not join 1920 19th Amendment: Women's Suffrage Period: 1920 to 1929 Harlem Renaissance 1921 Emergency Quota Act- drastically reduced number of immigrants to U.S.