Later, such alphabets were created for some of the Siberian and Caucasus peoples who had recently converted to Christianity.
In the 1930s, some of those languages were switched to the Uniform Turkic Alphabet.
Romani is written in Cyrillic in Serbia, Montenegro, Bulgaria and the former USSR.
The Mongolic languages include Khalkha (in Mongolia), Buryat (around Lake Baikal) and Kalmyk (northwest of the Caspian Sea).
It was officially approved in 1982 and started to be widely used by 1987.
Uralic languages using the Cyrillic script (currently or in the past) include: The Karelian language was written in the Cyrillic script in various forms until 1940 when publication in Karelian ceased in favor of Finnish, except for Tver Karelian, written in a Latin alphabet.
Over the last century, the alphabet used to write Kildin Sami has changed three times: from Cyrillic to Latin and back again to Cyrillic.
It was later adapted to write Russian and evolved into the Russian alphabet and the alphabets of many other Slavic (and later non-Slavic) languages.
South Slavic Cyrillic alphabets (with the exception of Bulgarian) are generally derived from Serbian Cyrillic.
This practice varies among Cyrillic-based languages and is sometimes further complicated due to the widespread use of incorrectly designed but commonly used fonts with Cyrillic alphabet support and the existence of several glyph variants for some of the Cyrillic letters (especially in their italic/cursive versions).