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.
Demographics of Croatia
From 1961 to 1991, the official language was formally designated as Serbo-Croatian or Croato-Serbian. Even during socialist rule, Croats often referred to their language as Croato-Serbian (instead of Serbo-Croatian) or as Croatian. Croatian and Serbian variants of the language were not officially recognised as separate at the time, but referred to as the west and east version, and had different alphabets: the Latin alphabet and Serbian Cyrillic. Croatians are protective of their language from foreign influences, as the language was under constant change and threats imposed by previous rulers (i.e. Austrian German, Hungarian, Italian and Turkish words were changed and altered to "Slavic" looking/sounding ones).