Franz Ferdinand Karl Ludwig Josef of Austria, Archduke Franz Ferdinand of Austria-Este (Franz Ferdinand Karl Ludwig Josef; ) (18 December 1863 – 28 June 1914) was an Archduke (like a prince) of Austria and, from 1896 until his death, next in lineto be the emperor of the former country called Austria-Hungary. He was killed in the city Sarajevo by Gavrilo Princip. Because of this, Austria declared war against Serbia, which started the first World War. 