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
Austro-Hungarian rule in Bosnia and Herzegovina artists like Alphonse Mucha presenting the Bosnian pavilion at the Paris Exposition of 1900. The idea of a unified South Slavic state (typically expected to be spearheaded by independent Kingdom of Serbia) became a popular political ideology in the region at this time, including Bosnia and Herzegovina. Certain Muslim circles in Bosnia and Herzegovina published the newspaper "Bošnjak" ("Bosniak"). This newspaper caused fierce discussions in Bosnia and Herzegovina, Croatia, and Serbia. The newspaper supported Kállay's policy, whose goal was to strengthen Austro-Hungarian rule in occupied Bosnia and Herzegovina. Although Kállay's policy was not widely accepted even amongst Muslims, "Bošnjak" nevertheless