The correct answer is Slavic peoples, Turkic Muslims, Non-Slavic
Europeans, and German migrants. The Slavic people were all people like
Russians, Ukrainians, Belarus people, and similar things. Turkic Muslims
were in the form of Chechens or other types of minorities. Non-Slavic
Europeans came in the form of Finnish people since Finland was a part of
the Russian Empire. German migrants were mostly people who came from
countries such as Prussia or other German parts of Europe.
