1900-1920 By Caleb Nelson Period: Mar 4, 1897 to Sep 14, 1901 William Mckinley Presidency Assasination* Period: Sep 14, 1901 to Mar 4, 1909 Teddy Roosevelt Presidency Period: Mar 4, 1909 to Mar 4, 1913 William H. Taft Presidency Period: Mar 4, 1913 to Mar 4, 1921 Woodrow Wilson Presidency Apr 6, 1917 America enters WW1 Jun 29, 1919 Treaty Ends WW1