world war 1 causes By idk123 Jun 28, 1914 assaination of archduke fernadaz Jul 23, 1914 Austria-Hungary ultimatum to serbia Jul 28, 1914 Austrai-Hungary declares war on Serbria this causes Russia to mobilize Jul 31, 1914 germany wants mobilization to stop Russia says its only against Austria-Hungary Aug 1, 1914 germany declares war on Russia Italy declares its neutrility and ottoman empire and Germany sign a secret alliance treaty Aug 3, 1914 germany declares war on france and belguim Aug 4, 1914 germany invades belguim to flank the french army Aug 4, 1914 United kingdom declared war on germany due to a treaty with belguim Aug 6, 1914 austria-hungary declares war on russia Aug 6, 1914 Serbia declares war on Germany Aug 7, 1914 british expindetary force arrives in france Aug 9, 1914 montenogo declares war on Austria-Hungary Aug 11, 1914 france declares war on Austria-Hungary Aug 12, 1914 United Kingdom declares war on Austria-Hungary
