history part 3 By duncansclass3e 1898 spanish american war 1898 puerto rico was annexed by the US 1898 the us annexed hawaii 1899 john hays open door policy with china 1899 us annexed Philippines 1903 the us asserted its right to intervene in cuban affairs with the platt amendment 1903 the united states first global economy 1909 president tafts dollar diplomacy with latin america 1914 world war 1 began in europe 1914 panama canal opened 1917 the us entered the ww1 due to german submarine warfare and the simmerman telegram 1917 woodrow wilson made his ¨make the world safe for democracy¨ speech 1918 woodrow wilson delivered his 14 points to eliminate the causes of war 1919 treaty of versailles was signed 1919 the us senate rejected the treaty of versailles and failed to join the league of nations 1920 league of nations was created as a worldwide organization devoted to peace