Expansionism By facebooker_1097177130322648 Feb 15, 1898 Sinking of U.S.S. Maine Mar 1, 1898 Aquations of Hawaii Apr 23, 1898 Spanish American War Oct 7, 1904 Roosevelt Collary Feb 1, 1912 Dollar Diplomacy Oct 7, 1914 Panama Canal Feb 15, 1915 German Proclamation May 7, 1915 Sinking of the Lusitania Aug 1, 1915 World War begins Apr 24, 1916 Sussex Pledge Feb 3, 1917 Failure of Diplomacy Feb 24, 1917 Zimmerman Telegram May 18, 1917 Selective Serivce Act Sep 26, 1918 Battle of Argonne Forest Oct 8, 1918 Alvin York