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.
Origin hypotheses of the Croats
The origin of the Croats before the great migration of the Slavs is uncertain. The modern Croats are considered a Slavic people, but the archaeological and other historic evidence on the migration of the Slavic settlers, the character of native population on present-day territory of Croatia, and their mutual relationship show diverse historical influences.