Demographic history of Bosnia and Herzegovina of Catholic preachers. Preottoman Catholic population had a great share in the emigrations from Bosnia and Herzegovina. The emigration flows were directed towards Dalmatia, Croatia, Slavonia, Baranja and north-west Bačka. The western part of today's region of Bosnia, today known as Bosnian Krajina, was taken by the Ottomans in the 16th century, and was for some time still known as "Turkish Croatia", as its once overwhelming Catholic and Croat majority disappeared and the Ottomans entrenched the new border along the Sava and Una rivers. After more than a century of military losses, the Habsburg Empire waged some victorious wars against
Gradiška, Bosnia and Herzegovina 2016): 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