WW1 By michael kennedy Jun 29, 1914 Assassination of Archduke Franz Ferdinand of Austria Jul 5, 1914 Germany accepts Germany decides to help Jul 28, 1914 Austria-Hungary declares war on Serbia Austria-Hungary declares war but had to wait for Germany Jan 31, 1915 Germans Fill artillery shells with gas 1917 Zimmerman Telegram Germany tries to get Mexico to turn against the U.S Jun 28, 1919 Treaty if Versailles
