whose assassination started world war i

The assassination that started World War I was that of Archduke Franz Ferdinand of Austria and his wife Sophie. They were killed on June 28, 1914, in Sarajevo by Gavrilo Princip, a Bosnian Serb nationalist associated with the group Young Bosnia and supported by the Serbian secret society known as the Black Hand. This assassination triggered a chain of events leading Austria- Hungary to declare war on Serbia, which then escalated into the broader conflict of World War I due to the alliances among European powers