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,
Kostajnica, Bosnia and Herzegovina Kostajnica, Bosnia and Herzegovina Kostajnica (), is a town and municipality located in northern Republika Srpska, an entity of Bosnia and Herzegovina. It is situated in the part of the Кrajina region. As of 2013, it has a population of 5,977 inhabitants. The municipality was created from part of the pre-war municipality of Novi Grad. It is located across the Una from Hrvatska Kostajnica, Croatia. During the Bosnian War, it was renamed to "Srpska Kostajnica" (Српска Костајница). After that, name of the town was changed to "Kostajnica". According to the 2013 census results, the municipality has 5,977 inhabitants. In the