He would have believed that.
Gavrilo princip is a Bosnian Serb who was responsible for the assassination of Archduke Franz Ferdinand and his wife, Sophie.
His assassination (by Gavrilo Princip) is what triggered World War I.
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Gavrilo Princip Was the Serbian nationalist behind the assassination of the archduke Franz Ferdinand
If you are questioning about the Black Hand in Serbia, then it would have to be the assassination of Archduke Franz Ferdinand which was committed by one of their members "Gavrilo Princip." This act triggered off World War One. Hope this helped :) S.L
The assassination of Archduke Franz Ferdinand of Austria by Gavrilo Princip .
One of them was the assassination of Archduke Franz Ferdinand of Austria by Gavrilo Princip
The Archduke was shot to death by a Serbian youth with his wife when they were riding in an open car. This event started WWI.
Archduke Franz Ferdinand was the victim and Gavrilo Princip was the shooter.
One of the triggering factors came with Gavrilo Princip's assassination of Archduke Franz Ferdinand of Austria.
Archduke Franz Ferdinand of Austria was assassinated by Gavrilo Princip in Sarajevo 28 June 1914 ; his death precipitated WW1 .
Gavrilo Princip assassinated the Archduke and his wife with a pistol while the Archduke was in Sarajevo, Bosnia-Herzegovina