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
Gradiška, Bosnia and Herzegovina Gradiška, Bosnia and Herzegovina Gradiška (; formerly "Bosanska Gradiška" / Босанска Градишка) is a town and municipality located in northwestern Republika Srpska, an entity of Bosnia and Herzegovina. As of 2013, it has a population of 51,727 inhabitants. It is geographically located in eastern Krajina region, and the town is situated on the Lijevče plain, on the right bank of the Sava river across from Stara Gradiška, Croatia, and about north of Banja Luka. In the Roman period, the "municipium" of Serbinum existed on the location of the present-day town. It was of strategic importance; a port of the Roman