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.
Serbian culture
Serbs speak the Serbian language, a member of the South Slavic group of languages, specifically in the Southwestern Slavic group with the Southeastern Slavic languages including Macedonian and Bulgarian. It is mutually intelligible with the standard Croatian and Bosnian language (see Differences in standard Serbian, Croatian and Bosnian) and some linguists still consider it part of the pre-war Serbo-Croatian language.