How was the Berlin Wall a part of the political competition between the Soviet Union and the United States?
It was created by the United States to keep their influence in Berlin by stopping East Berliners from escaping into the West.
It was initiated by the United Nations to promote peace and reduce competition for influence between the Soviets and Americans.
It was often pointed to by the United States as an example of the failure of the Soviet system and something they should challenge.
It was built by the Soviets in an attempt to blockade West Berlin and isolate it from West Germany, lessening American influence.