Answer:
In what two ways did the Soviets stray from the ideas about communism advanced by Karl Marx?
1. The Soviet Union never became a communist, egalitarian society where workers owned all the means of production, and money transactions where abolished. The Soviet Union was during all its history a socialist state where the state owned all property, and as a result, state officials where higher up in the social hierarchy over the rest of people.
2. The Soviet Union did not become the leading economy in the world, finally collapsing due to economic failure. Karl Marx theories predicted that socialist, and then, communist economies, would surpass and replace capitalist economies, however, this did not happen in practice.
What was one of the causes of increased hostility within the group of Allied powers?
The main tension within the allied powers were caused by the differences in opinion between the Soviet Union, and the inner alliance that formed Great Britain, France, and the United Kingdom.
During the war, the allied powers continued to fight the Nazis, but after the war ended, these tensions rose, and finally led to the division of Europe between a capitalist West, and a communist East.