World War 1 By chloefairy Jun 28, 1914 Archduke Franz Ferdinand is assassinated Aug 3, 1914 Germany invades Blegium Period: Oct 3, 1914 to Oct 3, 1919 World War 1 Apr 22, 1915 Second Battle of Ypres Germany used Chlorine gas May 7, 1915 Germany submarine sank British ship Lusitania Jul 1, 1916 First Battle of Somme Nov 7, 1916 Woodrow Wilson re-elected as President Jan 16, 1917 Zimmermann Telegram intercepted Called for alliance between Central Powers and Mexico Apr 2, 1917 United States declares war against Central Powers May 3, 1917 Selective Service Act is passed Called for all men eligable to sign up for Army Oct 3, 1917 Russia pulls out of war Jan 3, 1918 Woodrow Wilson establishes National War Labor Board Jan 18, 1918 Wilson proposes 14 Points and League of Nations Jul 4, 1918 US launches 95 ships in one day Nov 3, 1918 Austria/Hungary surrenders Nov 11, 1918 Germany surrenders Jun 28, 1919 Treaty of Versailles is signed