The assassination occurred at Sarajevo in Bosnia, a dependency, or rather, a Slavic state that had been seized by Austria.

It was the lightning flash that preceeded the thunder's mighty crash.
Much has been written of the causes which led to the tragedy.

Prinzip may have been a fanatic, but he was undoubtedly aided in his act by a number of others.

The natural inference immediately formed was that the murder was the outcome of years of ill feeling between Serbia and Austria-Hungary, due to the belief of the people in the smaller state, that their aspirations as a nation were hampered and blocked by the German element in the Austrian empire.

The countries had been on the verge of war several years before over the seizure of Bosnia and Herzegovina by Austria, and later over the disposition of Scutari and certain Albanian territory conquered in the Balkan-Turkish struggle.
Events are coming to light which may place a new construction on the causes leading to the assassination at Sarajevo.