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.
Croatian language
Croatian, although technically a form of Serbo-Croatian, is sometimes considered a distinct language by itself. Purely linguistic considerations of languages based on mutual intelligibility ("abstand" languages) are frequently incompatible with sociopolitical conceptions of language so that varieties that are mutually intelligible may be considered separate languages. Differences between various standard forms of Serbo-Croatian are often exaggerated for political reasons. Most Croatian linguists regard Croatian as a separate language that is considered key to national identity. The issue is sensitive in Croatia as the notion of a separate language being the most important characteristic of a nation is widely accepted, stemming from the 19th-century history of Europe. The 1967 Declaration on the Status and Name of the Croatian Literary Language, in which a group of Croatian authors and linguists demanded greater autonomy for the Croatian language, is viewed in Croatia as a linguistic policy milestone that was also a general milestone in national politics.