Franz Joseph I of Austria the Empire on 6 October 1908. However a diplomatic crisis erupted, as both the Serbs and the Italians demanded compensation for the annexation, which the Austro-Hungarian government refused to entertain. The incident was not resolved until the revision of the Treaty of Berlin in April 1909, exacerbating tensions between Austria-Hungary and the Serbs. On 28 June 1914 Franz Joseph's nephew and heir Archduke Franz Ferdinand, and his morganatic wife Sophie, Duchess of Hohenberg, were assassinated by Gavrilo Princip, a Yugoslav nationalist of Serbian ethnicity, during a visit to Sarajevo. When he heard the news of the assassination, Franz Joseph said
Archduke Franz Ferdinand of Austria Hohenzollern-Hechingen, and Liechtenstein. One of Sophie's direct ancestors was Albert IV, Count of Habsburg; she was descended from Elisabeth of Habsburg, a sister of King Rudolf I of Germany. Franz Ferdinand was also a descendant of King Rudolf I. Deeply in love, Franz Ferdinand refused to consider marrying anyone else. Finally, in 1899, Emperor Franz Joseph agreed to permit Franz Ferdinand to marry Sophie, on the condition that the marriage would be morganatic and that their descendants would not have succession rights to the throne. Sophie would not share her husband's rank, title, precedence, or privileges; as such, she would