Cause of World War I

Gavrillo Princip (Serbian) short Archduke Franz Ferdinand in Austria-Hungary in 1914. The Austro-Hungarian government blamed Serbia for supporting Princip, and then invaded Serbia. Russia helped Serbia, then Germany came in to help Austria-Hungary. Frnace then came to help Russia. Britain didn't join the war until Germany put its Schlifflen Plan into operation (invading France through Germany). The armistice ws signed 5am 11th November 1918. There was then a cease fire at 11am.