Croats of Bosnia and Herzegovina transferred to the Austro-Hungarian Empire. Even after the fall of the Ottoman rule, the population of Bosnia and Herzegovina was divided. In the Habsburg Kingdom of Croatia, Croatian politicians strived for the unification of the Kingdom of Dalmatia with Croatia. Another ambition of Croatian politicians was to incorporate the Condominium of Bosnia and Herzegovina into the Kingdom of Croatia. The Habsburg Governor Béni Kállay resorted to co-opt religious institutions. Soon, the Austrian Emperor gained support to name Orthodox metropolitans and Catholic bishops and to choose Muslim hierarchy. The first Catholic archbishop was Josip Stadler. Both apostolic vicarates, Bosnian and Herzegovinian,
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