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
Petar II Petrović-Njegoš with Montenegro against the Ottoman Turks. Like many of his contemporaries, Gavrilo Princip, the assassin of Archduke Franz Ferdinand of Austria, knew "Gorski vijenac" off by heart. Njegoš's influence parallels that of Shakespeare in the English-speaking world and his languagethough archaichas supplied modern Serbian with a number of well known quotations. The epic has become the basic educational text for Montenegrins and Serbs. In Montenegro it was (and still is) learnt by heart, and has been integrated into oral tradition. Njegoš's picture can often seen in taverns, offices, hospitals, on Yugoslav and Serbian currency and in people's homes in Montenegro