Chakavian
Chakavian in its actual use is the least spoken Serbo-Croatian dialect, being spoken only by 12% Croats. It is now mostly reduced in southwestern Croatia along the eastern Adriatic: Adriatic islands, and sporadically in the mainland coast, with rare inland enclaves up to central Croatia, and minor enclaves in Austria and Montenegro. All areas of old contacts with Romance languages.
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.