Intensive Mongolic–Slavic contacts started in the 13th century, as Turco-Mongolian troops led by Mongolian rulers invaded Eastern Europe. The Mongolian warriors spoke Middle Mongolian, and their contacts with locals brought a set of loanwords into East Slavic languages, mostly into Russian. The Russian expansion to east Siberia in the 17th century and the Mongolic-speaking Kalmyk migration to Russia of the late 16th century created conditions for linguistic interactions between Russian and Mongo…