Tenacious qualities necessary for a historian
Strombolian eruption and Effusive eruption.
Answer:
Correct answer is The US had a capitalist system, and the USSR had a communist system.
Explanation:
First option is not correct as democracy is a political, not economical system.
Second option is not correct, as United States fought against Socialism and Communism.
Third option is correct because Soviet Union had communist system, which included expropriation of land, while States developed Capitalism.
Last option is also not correct, due to facts mentioned before.
I think it would be the inside bend of a river, the other areas seem a little bit too high of energy