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
History of Bosnia and Herzegovina Croatia and Serbia in the mid 19th century, and was too well-entrenched to allow for the widespread acceptance of a parallel idea of Bosnian nationhood. By the latter half of the 1910s, nationalism was an integral factor of Bosnian politics, with national political parties corresponding to the three groups dominating elections. The idea of a unified South Slavic state (typically expected to be spearheaded by independent Serbia) became a popular political ideology in the region at this time, including in Bosnia and Herzegovina. The Austro-Hungarian government's decision to formally annex Bosnia-Herzegovina in 1908 (the Bosnian Crisis) added to a sense