Bosnian Crisis

Events leading to World War I
Unification of Germany 1866–1871 Franco-Prussian War 1870–1871 Second Concert of Europe 1871 Great Eastern Crisis 1875–1878 Campaign in Bosnia 1878 Dual Alliance 1879 Boer Wars 1880–1902 Austro–Serbian Alliance 1881–1903 Triple Alliance 1882 Berlin Conference 1884 Bulgarian Crisis 1885–1888 Reinsurance Treaty 1887–1890 Franco-Russian Alliance 1894 Anglo-German naval arms race 1898–1912 Fashoda incident 1898 Anglo-Japanese Alliance 1902 Russo-Japanese War 1904–1905 Entente Cordiale 1904 First Moroccan Crisis 1905–1906 Pig War 1906–1908 Anglo-Russian Convention 1907 Young Turk Revolution 1908 Bosnian Crisis 1908–1909 Racconigi Bargain 1909 Second Moroccan Crisis 1911 Italo-Turkish War 1911–1912 Balkan Wars 1912–1913 Assassination of Franz Ferdinand 1914 July Crisis 1914
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The Bosnian Crisis, also known as the Annexation Crisis (German: Bosnische Annexionskrise, Turkish: Bosna Krizi; Serbo-Croatian: Aneksiona kriza, Анексиона криза) or the First Balkan Crisis, erupted on 5 October 1908^[1] when Austria-Hungary announced the annexation of Bosnia and Herzegovina,^[a] territories formerly within the sovereignty of the Ottoman Empire but under Austro-Hungarian administration since 1878.^[9]

This unilateral action—timed to coincide with Bulgaria's declaration of independence from the Ottoman Empire on 5 October—sparked protestations from all the Great Powers and Austria-Hungary's Balkan neighbors, Serbia and Montenegro. In April 1909, the Treaty of Berlin was amended to reflect the fait accompli and bring the crisis to an end. Although the crisis ended with what appeared to be a total Austro-Hungarian diplomatic victory, it permanently damaged relations between Austria-Hungary and its neighbors, especially Serbia, Italy and Russia, and in the long term helped lay the grounds for World War I.^[10] Austro-Serbian relations – harmed by the annexation's inflaming of Serbian nationalists^[11] – continued to be strained to the point of declaring war on each other in 1914.^[12]

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