Dialects of Serbo-Croatian
Kajkavian is spoken in North Croatia, including the capital Zagreb, as well as in a few enclaves in Austria, Hungary, and Romania. Though its speakers are ethnic Croats and Kajkavian is thus generally considered a dialect of Serbo-Croatian, it is closer to neighboring Slovene than it is to Chakavian or Shtokavian. The Kajkavian area of Croatia is bordered on the northwest by Slovene language territory. It is bordered on the east and southeast by Shtokavian dialects roughly along a line that was the former division between Civil Croatia and the Habsburg Military Frontier; in southwest along Kupa and Dobra rivers, it persisted in ancient (medieval) contact with Chakavian dialects.
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).