History of World War 1 By philip1997 Jun 28, 1914 assassination of Archduke Franz assassination of Archduke Franz Jul 28, 1914 Europe's main power declaire war on each other Europe's main power declaire war on each other Jul 1, 1916 Battle of Somme Battle of Somme Jul 19, 1916 Battle of Fromelles Battle of Fromelles Apr 15, 1917 USA enters the war USA enters the war Nov 15, 1917 Russian revolution Russian revolution Jun 28, 1919 Treaty of Versaillles Treaty of Versaillles
