B, because the communists believed that there would be a revolution from the working people. They would stand up agains the higher classes and then there would be a situation in which the proletariat would have the power and eventually, the society would change in one without classess.
And socialists didn't want to be so violent and tried to get similar results in a 'normal' way.
This is actually easy, you should’ve started by doing some research. Humans have adapted to variety of climates by building things.. like houses. They even made clothing like jackets for colder climates. Just look up examples of how we’ve adapted to the climates and you’ll be good.
Explanation:
Ivan the Great believed that ___MOSCOW, RUSSIA___ had replaced Rome and Constantinople as the new center of __THE CATHOLIC CHURCH/CHRISTIANITY____. He married a ___BYZANTINE/ROMAN____ princess and even took a title from ancient Rome-he called himself __TSAR___, which comes from the Latin word ____CEASAR____.
