Answer:
Military Advancement and better use of technology.
Explanation:
Relationships between the U.S and the Soviet Union was a complex change of political, ideological and economic, led to changes among careful collaboration and frequently hostile power rivalry over the years. The political differences of these two countries often stopped them from leading a mutual agreement on issues, as in the case in the Cuban missile crisis, brought them close to the war.
The U.S. has always been against the communism and Soviet have used his influences in Europe. Both these nations have advance technology and military advancement in the nuclear weapon and missile race in which they were able to show their position in Europe.
