U.S Packet Unit 3 Part 3 By Lul Reke 1898 Spanish American War 1898 Puerto Rico Was Annex ed By The U.S 1899 John Hays Open Door Policy With China 1899 The U.s Annexed The Phillipines 1903 Th U.s Asserted Its right To Intervene In Cuban Affairs With The Platt Amendment 1909 President Taftś Dollar Diplomacy With Latin America 1914 Panama Canal Opened Making Passage Between The Atlantic And Pacific Ocean Easier 1914 World War 1 Began In Europe 1917 The U.s Entered WW1 Due To German Submarine Warfare And The Zimmerman Telegram 1917 Woodrow Wilson Made His ´make the world safe for democracy ´Speech 1918 Woodrow Wilson Delivered His 14 Points To Eliminate The Cause Of War 1919 Treaty Of Versailles Was Signed ( Punished Germany For WW1) 1919 The U.s 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