World War 1 By parsons4 May 31, 1870 Franco- Prussian war Mar 17, 1888 Accession of Wilhelm II to the German Throne Feb 20, 1904 Russo-Japanese War Jun 18, 1907 Entente Cordiale Mar 18, 1908 Bosnian Annexation Crisis Mar 18, 1911 Italo-Turkish War Jul 3, 1911 Moroccan Crises Mar 18, 1912 Balkan Wars Jun 28, 1914 Assassination of Archduke Franz Ferdinand of Austria Jul 23, 1914 July Ultimatum Jul 28, 1914 Austria- Hungary declares war on Serbia Aug 2, 1914 Turkey and Germany sign a secret alliance Aug 3, 1914 Germany declares war on France Aug 4, 1914 Germany invades Belguim so Great Britain has to declare war on Germany Aug 10, 1914 Austria- Hungary invades Russia May 7, 1915 Germany U boat sinks Lusitania Apr 2, 1917 USA enters the war