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This, combined with frustrations over political concessions to nascent Christian states in the east, culminated in a partially unsuccessful revolt by Husein Gradaščević, in 1831 after the Turkish Sultan Mahmud II slaughtered and abolished the Janissary. Related rebellions would be extinguished by 1850, but the situation continued to deteriorate. Later agrarian unrest eventually sparked the Herzegovinian rebellion, a widespread peasant uprising, in 1875. The conflict rapidly spread and came to involve several Balkan states and Great Powers, a situation which eventually led to the Congress of Berlin and the Treaty of Berlin in 1878.
Austro-Hungarian rule (1878–1918)
Main article: History of Bosnia and Herzegovina (1878–1918)
At the Congress of Berlin in 1878, the Austro-Hungarian Foreign Minister Gyula Andrássy obtained the occupation and administration of Bosnia and Herzegovina, and he also obtained the right to station garrisons in the Sanjak of Novi Pazar, which remained under Ottoman administration. The Sanjak preserved the separation of Serbia and Montenegro, and the Austro-Hungarian garrisons there would open the way for a dash to Salonika that "would bring the western half of the Balkans under permanent Austrian influence." "High [Austro-Hungarian] military authorities desired [an...] immediate major expedition with Salonika as its objective."
On 28 September 1878 the Finance Minister, Koloman von Zell, threatened to resign if the army, backed by the Archduke Albert, were allowed to advance to Salonika. In the session of the Hungarian Parliament of 5 November 1878 the Opposition proposed that the Foreign Minister should be impeached for violating the constitution with his policy during the Near East Crisis and by the occupation of Bosnia-Herzegovina. The motion lost 179 to 95. The gravest accusations were raised by the opposition rank and file against Andrassy.
Although an Austro-Hungarian side quickly
