Well, as I recall, the Archduke was killed by a Serb, Gabrio Princip, who was a member of an Serbian anarcho-terrorist group called Black Hand.
And now you know...the rest of the story.
That's half right...its Gavrilo Princip and the fact that he pulled the trigger was an accident of fate. There weren't just Serbs in the Black Hand, there were Croats and a Muslim that were a part of the group as well.
Princip, like I mentioned above, just happened to be the trigger man, he was actually in the wrong place and when the previous attempts at taking the Austrain's life failed, the driver took a wrong turn down a street that Princip jus thappened to be waiting on. Princip was in the wrong spot, its by shear luck that that driver took a wrong turn. It was one big clusterf**k, they got lucky.
Gavrilo Princip was a 19 years old student ,and member of the Bosnian group called "Young Bosnia".The group was opposed Austrian anexation of Bosnia."Young Bosnia"m had both Bosnian Serbs and Muslims as a members.OK?