WWI Timeline By sarahsandow Jun 28, 1914 Archduke Francis Ferdinand is assassinated Jul 28, 1914 Austria-Hungary declares war on Serbia, beginning WWI May 7, 1915 Sinking of the Lusitania Apr 6, 1917 United States declares war on Germany Feb 14, 1919 Draft of the covenant of the League of Nations is completed Jun 28, 1919 Allied and German representatives sign treaty of Versailles
