Dhameystir weedha soo socota: Inkastoo Illyrians ay gaareen hadafkii kor u qaadista wacyiga qaran ee Croatia ilaa 1850, waxay ku guuldareysteen meelo kale. Sanadihii 1850-kii, fikradda Illyrian waxaa difaacay HPS iyo hoggaamiyayaasha kiniisadaha Roman Catholic Josip Juraj Strossmayer iyo Franjo Rački. Iyagoo ka baqaya "Drang nach Osten", waxay rumeysan yihiin in Jarmalka iyo Magyarisation ay iska caabin karaan oo keliya iyada oo loo marayo midnimada dadka kale ee Slavic, gaar ahaan Serbs. Waxay u ololeeyeen mideynta Croatia, Slavonia, iyo Dalmatia maadaama Boqortooyada Saddex geesoodka ah ay ballaarisay si ay ugu darto South Slavs kale ee Austria (ama Austria-Hungary ka dib Heshiiskii 1867) ka hor inta aysan ku biirin siyaasadaha kale ee Koonfurta Slavic ee federaal ama isbaheysi. Isku duwidda la soo jeediyay ee dhulalka kala duwan ee loo yaqaan 'Croatian' ama 'South Slavic' ayaa horseeday soo jeedinta trialism ee Austria-Hungary oo ay ku jirto siyaasad Koonfurta-Slavic ah oo leh darajo u dhiganta Boqortooyada Hungary. Croatia iyo Slavonia waxaa lagu mideeyay Xuduudda Milatari ee Croatia-Slavonia sanadkii 1881. Si kastaba ha noqotee, kala qaybsanaanta ayaa sii jirtay sidii ay ahayd inta u dhaxaysa Dhulka Boqortooyada Saint Stephen <unk> qaybta Hungarian ee boqortooyada <unk> halka Dalmatia iyo Istria lagu daray Cisleithania Austrian. Waxaa sidoo kale jiray dad badan oo reer Croatia ah oo ku nool Bosnia iyo Herzegovina
waxaa qabsatay Austro-Hungary sanadkii 1908. Midaynta dhulalkaas waxay noqotay arrinta ugu muhiimsan ee siyaasadda Croatia-Slavonia ee ku aaddan xaaladda trialist.