Greater Serbia the Kingdom of Serbia retreated from Durrës in April 1913 under pressure of the naval fleet of Great Powers, but it remained in other parts of Albania for the next two months. The secret military society called Unity or Death, popularly known as the Black Hand, headed by Serbian colonel Dragutin Dimitrijević Apis, which took an active and militant stance on the issue of a Greater Serbian state. This organization is believed to have been responsible for numerous atrocities following the Balkan Wars in 1913. In 1914, Young Bosnia member Gavrilo Princip assassinated Archduke Franz Ferdinand in Sarajevo, which set
Yugoslavs constructed the type of single Yugoslav civilization-the final and most important goal of our country." On 28 June 1914, Gavrilo Princip shot and killed Archduke Franz Ferdinand, the heir to the Austrian throne, and his wife, in Sarajevo. Princip was a member of Young Bosnia, a group whose aims included the unification of the Yugoslavs and independence from Austria-Hungary. The assassination in Sarajevo set into motion a series of fast-moving events that eventually escalated into full-scale war. After his capture, during his trial, he stated "I am a Yugoslav nationalist, aiming for the unification of all Yugoslavs, and I do