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
Bosnia and Herzegovina abandoned the central parliament in Sarajevo, and formed the Assembly of the Serb People of Bosnia and Herzegovina on 24 October 1991, which marked the end of the tri-ethnic coalition that governed after the elections in 1990. This Assembly established the Serbian Republic of Bosnia and Herzegovina on 9 January 1992, which was renamed Republika Srpska in August 1992. On 18 November 1991, the party branch in Bosnia and Herzegovina of the ruling party in the Republic of Croatia, the Croatian Democratic Union (HDZ), proclaimed the existence of the Croatian Community of Herzeg-Bosnia, with the Croatian Defence Council (HVO) as