The russian empire was multi-ethnic with populations of which of the following? slavic peoples muslim serbs turkic muslims non-slavic europeans german migrants

I'm not sure if you want only one, which it can't be only one of those so, here:

A. Slavic People
C. Turkish Muslims
D. Non-Slavic Europeans

I hope that this helps.

from the conditions of the working class in england by friedrich engels,the main idea is :

manchester's leaders hoped to oppress its working class to benefit factory owners.