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 Franz Ferdinand of Austria Great Power, such as during the Boxer Rebellion, in 1900. Other nations, including, in his description, "dwarf states like Belgium and Portugal", had soldiers stationed in China, but Austria-Hungary did not. However, Austria-Hungary did participate in the Eight-Nation Alliance to suppress the Boxers, and sent soldiers as part of the "international relief force". Franz Ferdinand was a prominent and influential supporter of the Austro-Hungarian Navy in a time when sea power was not a priority in Austrian foreign policy and the Navy was relatively little known and supported by the public. After his assassination in 1914, the Navy honoured Franz