World War 1 By 23lras Period: May 20, 1882 to 1915 Triple Alliance Germany, Italy, Austria-Hungary 1907 Triple Entente Alliance Formed Russia, France, Britian Jun 28, 1914 Franz Ferdinand Assasination Assassination of Archduke Franz Ferdinand of Austria in Sarajevo. Jul 28, 1914 Austria-Hungary Declares War on Serbia Jul 28, 1914 Germany assists Austria-Hungary while Russia assists Serbia Period: Jul 28, 1914 to 1918 World War 1 Aug 1, 1914 Germany Declares war on Russia Aug 3, 1914 Germany Declares war on France Aug 4, 1914 United Kingdom declares war on Germany. Germany also invades Belgium