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
Socialist Republic of Bosnia and Herzegovina divided among banovinas. When SR Bosnia and Herzegovina was formed, it included what were the territories of most of Vrbas Banovina, the western part of Drina Banovina, the northwestern part of Zeta Banovina, and the eastern parts of Banovina of Croatia. During a meeting of the State Anti-fascist Council for the National Liberation of Bosnia and Herzegovina (ZAVNOBiH) in Mrkonjić Grad on 25 November 1943. In April 1945 its name was formalized as the Federal State of Bosnia and Herzegovina ( / Федерална Држава Босна и Херцеговина), a constituent unit of the Democratic Federal Yugoslavia. With DF Yugoslavia changing its