When he was in Belgrade in 1912 and 1913, preparing for his exams at the First Belgrade Gymnasium, Princip's sole friend was Momčilo Nastasijević, who grew up to become a prominent poet and dramatist.
The murder at Sarajevo in Bosnia by Gavrilo Princip, a Bosnian Serb nationalist, Austrian subject and member of Young Bosnia (a secret society ), was the reason why this ultimatum was made.
Contrary to many reports from various sources, an M1900 was not used to assassinate Archduke Franz Ferdinand of Austria in Sarajevo on June 28, 1914; the handgun used by Gavrilo Princip in that notorious incident was instead a FN 1910.
Gavrilo Princip, who assassinated Archduke Franz Ferdinand of Austria, starting World War I, was born here in 1894 and lived here when he was young.
On 28 June 1914, as the chauffeur for Count Alexander von Boos-Waldeck, Merz drove the third car in an official motorcade in which the Archduke Franz Ferdinand toured Sarajevo, and may have witnessed the assassination of the Archduke by Gavrilo Princip.
On 28 June 1914, Gavrilo Princip, a Bosnian Serb student and member of Young Bosnia, assassinated the heir to the Austro-Hungarian throne, Archduke Franz Ferdinand of Austria in Sarajevo, Bosnia.
On 30 June, two days after Ferdinand and his wife were killed by Gavrilo Princip in the Bosnian city of Sarajevo, Viribus Unitis transported their bodies back to Trieste.