Franz Joseph I of Austria of his only son and heir, Crown Prince Rudolf, in 1889, and the assassination of his wife, Empress Elisabeth, in 1898. After the Austro-Prussian War, Austria-Hungary turned its attention to the Balkans, which was a hotspot of international tension because of conflicting interests with the Russian Empire. The Bosnian Crisis was a result of Franz Joseph's annexation of Bosnia and Herzegovina in 1908, which had been occupied by his troops since the Congress of Berlin (1878). On 28 June 1914, the assassination of his nephew, Archduke Franz Ferdinand, in Sarajevo resulted in Austria-Hungary's declaration of war against the Kingdom of
Archduke Joseph Franz of Austria place of his siblings Marie Louise, Duchess of Parma, Ferdinand I of Austria, Archduchess Marie Caroline of Austria, Archduchess Caroline Ludovika of Austria, Archduchess Maria Anna of Austria, Archduke Johann Nepomuk of Austria, Archduchess Amalie Theresa of Austria, and (possibly) Archduke Franz Karl of Austria. His parents, Francis II, Holy Roman Emperor and Maria Theresa of Naples and Sicily, and his great-grandmother, Maria Theresa of Austria, are also buried there. Archduke Joseph Franz of Austria Archduke Joseph Franz Leopold of Austria (9 April 1799 – 30 June 1807) was the second son and seventh child of Francis II, the last