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 Karl Ludwig of Austria Schönbrunn in Vienna returning from a journey to Palestine and Egypt, allegedly after the consumption of contaminated Jordan waters. His widow, Maria Teresa died on 12 February 1944. Archduke Karl Ludwig of Austria Archduke Karl Ludwig Joseph Maria of Austria (30 July 1833 – 19 May 1896) was the younger brother of Franz Joseph I of Austria (1830–1916), the father of Archduke Franz Ferdinand of Austria (1863–1914), whose assassination ignited World War I, and grandfather of the last emperor, Charles I. He was born at Schönbrunn Palace in Vienna, the son of Archduke Franz Karl of Austria (1802–1878) and his