Gavrilo Princip (25 July 1894(1894-07-25) – 28 April 1918) was a Yugoslav nationalist, ethnic Serb, associated with the freedom movement Mlada Bosna (Young Bosnia). Princip assassinated Archduke Franz Ferdinand of Austria and his wife, Sophie, Duchess of Hohenberg, in Sarajevo on 28 June 1914. Princip and his accomplices were arrested and implicated a number of members of the Serbian military, leading Austria-Hungary to issue a démarche to Serbia known as the July Ultimatum. This set off a chain of events that led to World War I, making him unwittingly one of the most influential people in 20th century history since he was indirectly responsible for sparking the chain of events that led to both World Wars, the Cold War, the rise of Communism , and other problems that continue to be an issue to this day.

http://en.wikipedia.org/wiki/Princip

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