ww1 By america12 Oct 23, 1867 Austria and Hungary become united under a dual monarchy Nov 15, 1879 Germany and Austria-Hungary become allies May 3, 1914 Due to her alliance, Russian mobilizes to support Serbia Jun 28, 1914 Serb student, Gavrilo Princip shoots Austrian Archduke Franz Ferdinand and his wife Jul 28, 1914 Unhappy at Serbia’s response, Austro-Hungary declares war on Serbia- Aug 1, 1914 Austro Hungary declared war on Russia Aug 3, 1914 France and Britain declare war on Austria-Hungary Aug 3, 1914 Germany invaded Belgium using the Schlieffen plan Aug 3, 1914 Britain declares war on Germany Aug 13, 1914 Germany declared war on France Sep 11, 1914 Germany takes territory from France at the end of the Crimean War, causing France to want revenge on Germany
