Kammala jumla mai zuwa: Bayan mahimmin yaƙin 1526 na Mohács da zaɓen 1527 a Cetin, Croatia ta zama wani ɓangare na Daular Habsburg ta Austriya. Daular Ottoman a hukumance ta kafa Eyalet na Bosnia a shekara ta 1580. An rage ƙasashen Croatian gaba ɗaya zuwa wani ɓangare na abin da suka ƙunsa, kuma kawai sassan yammacin Bosanska Krajina na yau suna tsayayya da mulkin Ottoman. Duk da haka, sojojin Ottoman sun fi son ci gaba zuwa ga manufofin su a arewa maso yamma ta hanyar sauƙin sauƙaƙe, kamar su tare da kogin Danube, alal misali Vienna ya kasance
An fara kewaye shi a 1529 bayan sojojin sun wuce ta Osijek, Mohács da Buda. Abubuwan da ke faruwa a cikin da kewaye da yankin, musamman a lokacin, sun haɗa da kogunan Sava, Vrbas, Una da Sana, da kuma tsaunuka kamar Plješevica, Šator, Klekovača, Raduša, Grmeč, Kozara da Vlašić.