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
Sophie, Duchess of Hohenberg Sophie, Duchess of Hohenberg Sophie, Duchess of Hohenberg (; ; 1 March 1868 – 28 June 1914), was the wife of Archduke Franz Ferdinand of Austria, the heir to the Austro-Hungarian throne. Their assassination in Sarajevo sparked a series of events that eventually led to World War I. Sophie was born in Stuttgart as the fourth daughter of Count Bohuslav Chotek von Chotkow und Wognin, a Bohemian aristocrat and Ambassador, and his wife Countess Wilhelmine Kinsky von Wchinitz und Tettau. As a young woman, Sophie became a lady-in-waiting to Archduchess Isabella, the wife of Archduke Friedrich, Duke of Teschen, head