Croats of Bosnia and Herzegovina Dalmatian Croatia formed a united Croatian kingdom, which included Dalmatia and part of Bosnia and Herzegovina, Pannonia (eastern Slavonia and northeastern Bosnia), and Savia (western Slavonia). In 1102 Croatia entered into a union with the Kingdom of Hungary. After this, Bosnia, which was earlier part of the Kingdom of Croatia, started to disassociate with Croatia. At first, Bosnia became a separate principality under Ban Kulin who managed to solidify Bosnian autonomy at the expense of more powerful neighbours, but only in the 14th century did Bosnia become a formidable state. In the 14th century, King Tvrtko I conquered part of
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