Causes of WW I

 When the French occupied Tunisia, Bismarck took advantage of Italian resentment towards France. There were many reasons about WW I National Rivalries,Alliance System,Militarism,Economic Rivalries,Colonial Rivalries,Pre-war Crises,Immediate Cause Of The War 1914,Course of the war 1914 1918,Results of the first world war. World War I was the most people who died they weren't many survivors.