Answer:
Rivalry
Explanation:
This can be seen from the beginning after WWII, the U.S.S.R. and the U.S.A. were competing with each other during the height of the Cold war for Ideological dominance in third world countries such as Korea, Vietnam, Afghanistan as well as Latin American guerrilla groups to name a few.
The claim that best supports the pattern of interaction from 1948 to 1979 between the US And Soviet Union was When one party attempted to expand its sphere of influence into another country or region, conflict occurred.
The conflict between the United States and the Soviet Union is about the territorial area of the country where they want to expand after world war II.
The causes of conflict between both the countries are the development of nuclear weapons and the fall of communism where they have different ideologies of the ruling.
They have good relationships during world war II when they fought together against the axis power of the world but different political ideologies caused conflict between them.
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