Trifko Grabež society. For the next two years he spent most of his spare time with other nationalists who favoured a union between Bosnia and Herzegovina and Serbia. When it was announced that Archduke Franz Ferdinand, the heir to the throne of Austro-Hungarian Empire, was going to visit Bosnia and Herzegovina in June 1914, Colonel Dragutin Dimitrijević, the chief of the Intelligence Department in the Serbian Army and head of the Black Hand, sent seven men, Grabež, Nedeljko Čabrinović, Vaso Čubrilović, Cvjetko Popović, Danilo Ilić, Muhamed Mehmedbašić and Gavrilo Princip to Sarajevo to assassinate him. Each man was given either a revolver
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