Austro-Hungarian rule in Bosnia and Herzegovina power over the Catholic Church in Bosnia and Herzegovina, the Emperor established the cathedral in Sarajevo and named Archbishop Dr. Josip Štadler as its head. Just before the occupation of Bosnia and Herzegovina, the Croatian Sabor asked the Emperor to alter the situation in Bosnia and Herzegovina so it could be unified with the Kingdom of Croatia-Slavonia and the Kingdom of Dalmatia. The Emperor refused to accept this demand and dismissed the Sabor. This was done as the Austrian-Hungarian authorities had a plan to isolate Bosnia and Herzegovina from its neighbouring Slavic countries, Croatia and Serbia, and to halt the
Serbs of Bosnia and Herzegovina Montenegro took advantage of this weakness and attacked the Ottoman Empire in 1876, soon after the Russian Empire did the same. The Turks lost the war in 1878. After the Congress of Berlin was held in same year, mandate of Bosnia and Herzegovina was transferred to the Austro-Hungarian Empire. More specifically, In 1875, the Herzegovina Uprising broke out in the Bosnia Vilayet. On July 2, 1876, Golub Babić and his 71 commanders signed the "Proclamation of the Unification of Bosnia with Serbia". This event is often known, among Serbian historians, as the "Third Serbian Uprising". This rebellion directly led to