In 1908, Austria-Hungary had taken over Bosnia, a region next to Serbia. Some people living in Bosnia were Serbian, and wanted the area to be part of Serbia. One of these was the Black Hand organization. They sent men to kill Archduke Franz Ferdinand of Austria when he visited Sarajevo, the capital of Bosnia. They all failed to kill him with grenades while he passed through a large crowd. But one of them, a Serbian student named Gavrilo Princip, shot him and his pregnant wife with a pistol.