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
Partition of Bosnia and Herzegovina it was internally divided into six oblasts of the Kingdom of Serbs, Croats and Slovenes. In 1929, the oblasts were replaced with four Banovinas of the Kingdom of Yugoslavia, but all of them also included regions outside of Bosnia and Herzegovina. The Cvetković-Maček agreement that created the Banovina of Croatia in 1939 encouraged what was essentially a partition of Bosnia between Croatia and Serbia. The agreement angered Bosniaks, then known as Yugoslav Muslims, including the Yugoslav Muslim Organization (JMO) that denounced the agreement's partition of Bosnia and Herzegovina. During the Bosnian War, it was proposed that BiH be divided into