Answer:
Option: Archduke Franz Ferdinand
Explanation:
Archduke Franz Ferdinand of Austria in 1914, assassinated by a Bosnian Serb nationalist. The assassination is widely considered to be one of the most important events that helped leading up to the war in Europe. The Austria-Hungary government blamed the Serbians, believing to have helped the Bosnian terrorists in the attack. Serbia supported by the Russians, and the Austria- Hungary government along with Germans declared war on Serbia.
