Slavs
Standardised Slavic languages that have official status in at least one country are: Belarusian, Bosnian, Bulgarian, Croatian, Czech, Macedonian, Montenegrin, Polish, Russian, Serbian, Slovak, Slovene, and Ukrainian.
Vlachs in the history of Croatia
The meaning of the term "Vlach" within the territory of present-day Croatia (like Bosnia and Herzegovina and Serbia) differed over time and had multiple meanings. In the Middle Ages it was primarily an exonym that referred to Romance-speaking pastoralist communities in the mountains, or rarely other Romance-speaking people like Italians. Due to their specific lifestyle, the term acquired a social-professional (shepherds) connotation. In the 13th and 14th centuries the shepherds of the Balkans were called Vlachs ("Vlasi"), including Slavic-speakers. Initially it was used for shepherds and transporters in the hinterland regardless of ethnicity and religion (though often Romance-speaking), strangers and newcomers as opposed to natives (in Istria, for speakers with Shtokavian traits), for hinterlanders by Dalmatian island inhabitants, for rugged villagers by the townspeople, and later an Orthodox Christian (with time mostly identified with Serbs). From the 16th century, with the Ottoman conquest and mass migrations of Slavic-speaking people, the term "Vlach" was primarily used for a socio-cultural and professional segment of the population, rather than to an ethnicity.