Answer:
Stalin and Trotsky. Stalin won in the end
Explanation:
Both has their pros and cons. Someone might lean to the right because they are religious. It seems that most Christians are conservative. Yes, some Christians are democrats. Some democrats don't accept everything the left have to offer and same with the conservatives.
The last great emperor in the Ottoman Empire was Mehmed VI or as Vahideddin.
C is the answer. Wish you good luck.