The correct answer is Slavic peoples, Turkic Muslims, Non-Slavic Europeans, and German migrants. The Slavic people were akin to Russians, Ukrainians, Belarus people. Turkic Muslims were Chechens or other types of minorities. Non-Slavic Europeans were known as Finnish people due to the fact that 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.