Causes of WW I

World War One was started in 1914.The event triggering it was the murder of Archduke Franz Ferdinand. By a member of the "black hand gang". They were of Serbian Nationalists determend to help the Serbians of Bosnia break free from Austria-Hungary control.
So when Austria-Hungary declared war on Serbia France and England came to help, Germany and Italy came to help Austria-Hungary so basikly every one was in a World War.

The Causes of the war was Nationalism, Militarism, Assassination of Franz Ferdinand.

Each nation's nationalism was cause by a buildup in military forces in the years prior to the assassination of Franz Ferdinand. The nationalist feelings also led to many men volunteering to join their nation's army.

Militarism is using military power to solve diplomatic crises, it influenced the arms rac. It was a direct cause of WW1 because the Germans based their diplomacy around their military.The arms race caused the war, both sides felt provoked after the assasination of the Ferdinand.Both sides felt threatened, they did not trust each other, and that caused the war.

In 1914 the event triggering it was the murder of Archduke Franz Ferdinand. By a member of the "black hand gang".