Croatia
Croatian is the official language of Croatia, and became the 24th official language of the European Union upon its accession in 2013. Minority languages are in official use in local government units where more than a third of population consists of national minorities or where local legislation defines so. Those languages are Czech, Hungarian, Italian, Ruthenian, Serbian, and Slovak.
According to the 2011 Census, 95.6% of citizens of Croatia declared Croatian as their native language, 1.2% declared Serbian as their native language, while no other language is represented in Croatia by more than 0.5% of native speakers among population of Croatia. Croatian is a member of the South Slavic languages of Slavic languages group, and is written using the Latin alphabet. There are three major dialects spoken on the territory of Croatia, with standard Croatian based on the Shtokavian dialect. The Chakavian and Kajkavian dialects are distinguished by their lexicon, phonology, and syntax.
Croatian replaced Latin as the official language of the Croatian government in the 19th century. In Yugoslavia, from 1972 to 1989, the language was constitutionally designated as "Croatian literary language". It was the result of the resistance to "Serbo-Croatian" in the form of a Declaration on the Status and Name of the Croatian Literary Language and Croatian Spring. Croatians are protective of their Croatian language from foreign influences and are known for Croatian linguistic purism, 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 or sounding ones).
Vlachs in the history of Croatia
According to Stjepan Pavičić (1931), the Romance Vlachs or Morlachs of the Dinara and Velebit lost their Romance language by the 14th or 15th century, or were at least bilingual at that time. The so-called Istro-Romanians, called by themselves "Rumeri" or "Vlasi", continued to speak their language on the island of Krk (extinct in the 20th century; recorded Pater Noster) and villages around the Čepić lake in Istria, while other communities in the mountains (Ćićarija) above the lake preserved the Shtokavian-Chakavian dialect with Ikavian accent from the southern Velebit and area of Zadar. The documents about Vlachs from Cetina county indicate Chakavian dialect with Ikavian accent.