Minority languages of Croatia
The Istro-Romanian language is one of the smallest minority languages spoken in Croatia with fewer than 500 speakers concentrated mainly in the north-eastern part of the Istrian Peninsula. While the language is not officially recognized in the Constitution of Croatia under that name (the Constitution does reference Romanians and Vlachs), it is specifically recognized as such in the Statute of the Istrian Region and in the Statute of the Municipality of Kršan . In 2016, with funding from the Romanian government, the school in the village of Šušnjevica was fully renovated and is expected to start offering education in Istro-Romanian.
Serbo-Croatian
The topic of language for writers from Dalmatia and Dubrovnik prior to the 19th century made a distinction only between speakers of Italian or Slavic, since those were the two main groups that inhabited Dalmatian city-states at that time. Whether someone spoke Croatian or Serbian was not an important distinction then, as the two languages were not distinguished by most speakers. This has been used as an argument to state that Croatian literature Croatian per se, but also includes Serbian and other languages that are part of Serbo-Croatian, These facts undermine the Croatian language proponents' argument that modern-day Croatian is based on a language called Old Croatian.