Old East Slavic
Human language
Old East Slavic was a language used by the East Slavs from the 7th or 8th century to the 13th or 14th century, until it diverged into the Russian and Ruthenian languages. Ruthenian eventually evolved into the Belarusian, Rusyn, and Ukrainian... Wikipedia
Language families: Indo-European languages, Slavic languages, East Slavic languages, and more
Era: 7th or 8th century to the 13th or 14th century
Writing system: Early Cyrillic alphabet