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.
Greater Croatia
The foundations of the concept of Greater Croatia are laid in late 17th and early 18th century works of Pavao Ritter Vitezović. He was the first ideologist of Croatian nation who proclaimed that all Slavs are Croats. His works were used to legitimize expansionism of the Habsburg Empire to the east and south by asserting its historical rights to claim Illyria. "Illyria" as Slavic territory projected by Vitezović would eventually incorporate not only most of the Southeastern Europe but also parts of Central Europe such as Hungary. Vitezović defines territory of Croatia which, besides Illyria and all Slavic populated territory, includes all the territory between Adriatic, Black and Baltic seas.