U.S. Unit 3 (3) By weeKingKweezy Apr 1, 1898 spanish american war Apr 1, 1898 the u.s. asserted its right to intervene in cuban affairs with the platt amendment Jul 7, 1898 the u.s. annexed hawaii Dec 10, 1898 Puerto rico was annexed by the u.s. Jan 1, 1899 the u.s. annexed the philippines Sep 6, 1899 John hay's open door policy with china Jan 1, 1909 president taft's dollar diplomacy with latin america Aug 1, 1914 world war 1 began in europe Aug 15, 1914 panama canal opened making passage between the atlantic and pacific oceans easier Mar 1, 1917 the u.s. entered ww1 due to german submarine warfare and the zimmermann teledgram Apr 2, 1917 woodrow wilson made his " make the world safe for demoracy" speech May 7, 1919 treaty of versailles was signed punished germany for ww1) Jan 1, 1920 league of nations was created as a worldwide organization devoted to peace Mar 19, 1920 the u.s. senate rejected the treaty of versailles and failed to join the league of nation Jan 8, 1988 woodrow wilson delivered his 14 points to eliminate the causes of war Dec 1, 2001 the united states first global economy