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.
Minority languages of Croatia
During Napoleon I's invasion of Croatia in the early 19th century, a large portion was of the country was converted into the Illyrian Provinces ("Provinces illyriennes)" and incorporated as a French province in 1809. French rule established the official language of the autonomous province to be French followed by Croatian, Italian, German, and Slovene. According to a study commissioned by France's Ministry for Europe and Foreign Affairs, 10% of Croatian speak French.