-
Arch Duke assasinated
-
Period: to
WW1
-
Austria-Hungary declares war on Serbia
-
Germany declares war on Russia
-
Lusitania sank
-
Battle of Somme begins
-
Battle of Verdun begins
-
Trench warfare
-
U.S.A declares war on Germany
-
Bolsheviks overthrow Russisan government
-
Treaty of Versailles is signed