Answer:
The Soviet Union.
Explanation:
The Soviet Union is your answer. The US's policy of containment called for the United States to provide military or economic aid to any anti-communist government in the world. It was relatively deemed successful in the long run, though the United States did fail in their objective with the fall of Saigon (Vietnam War), as well as Bay of Pigs invasion (Cuban exiles attempt to overthrow Fidel Castro's government in Cuba), for examples.
Learn more about the US's policy of containment, here:
https://brainly.com/question/2737591
