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
History of terrorism 1911 by Dmitry Bogrov, a spy for the secret police in several anarchist, socialist and other revolutionary groups. On June 28, 1914, Gavrilo Princip, one of a group of six assassins, shot and killed Archduke Franz Ferdinand of Austria, heir to the Austro-Hungarian throne, and his wife, Sophie, Duchess of Hohenberg, in Sarajevo, the capital of the Condominion of Bosnia and Herzegovina. The assassinations produced widespread shock across Europe, setting in motion a series of events which led to World War I. In the 1930s, the Nazi regime in Germany and Stalin's rule in the Soviet Union practiced state terror