Serbian army's retreat through Albania June 1914, Gavrilo Princip, a Bosnian Serb student and member of Young Bosnia, assassinated the heir to the Austro-Hungarian throne, Archduke Franz Ferdinand of Austria in Sarajevo, Bosnia. The political objective of the assassination was to break the Austro-Hungarian's south-Slav provinces off from the Austro-Hungarian Empire. The assassination triggered a chain of events that embroiled Russia and the major European powers. This began a period of diplomatic manoeuvring among Austria-Hungary, Germany, Russia, France, and Britain called the July Crisis. Wanting to finally end Serbian interference in Bosnia and the Balkans, Austria-Hungary delivered the July Ultimatum to Serbia, a series of
Serbian nationalism some Štokavian-speaking peoples to call themselves names other than Serbs. Ilija Garašanin was another early proponent of Serbian nationalism and a proponent of a Greater Serbia - a Serbian state whose borders were extended to include all Serbs in the Balkan region. After Serbia was recognized as an independent state in 1878, both South Slavs and the Serbian government considered their peoples in Habsburg-ruled Austria-Hungary to be under occupation resulting in increasing antagonism between Serbia and Austria-Hungary from the late 19th century to the early 20th century. In 1914 Austrian Archduke Franz Ferdinand was assassinated by Bosnian Serb revolutionary Gavrilo