premise: Croatia has a king.
hypothesis: Croatia . Tomislav became the first king by 925 , elevating Croatia to the status of a kingdom . The Kingdom of Croatia retained its sovereignty for nearly two centuries , reaching its peak during the rule of Kings Petar Krešimir IV and Dmitar Zvonimir . Tomislav ( [ tǒmislaʋ ] , Tamisclaus ) was the first King of Croatia .