I think it might be d but please let me know if it is right
Answer:
The most important reason is that the Communism meant the division of land, which until then was totally in the hands of rich Russian landowners.
Explanation:
Most people in Russia, especially peasants were poor. They had no belongings and had to work on the farms of Russian landowners. Communism offer them distribution of land and end of war, during which Russia suffered the most. That is why many people accepted to join the Red Army.
Paul, after Christ's death, became one of the main reasons that the Roman empire converted to Christianity. He went on many long trips deep into the empire, preaching and spreading the religion. He and the other disciples affected so many people, that the Roman emperor Constantine made it legal to practice other religion in the empire. Eventually, because Paul started a chain reaction, and the emperor after Constantine, Theodosius, made the empire's main religion Christianity.
