To stop the spread of communism after world war ii, the united states established a policy known as .

A. Containment

Explanation:

Correct

Further explanation:

The policy of containment set the tone for US foreign policy by focusing on keeping communism and the Soviet Union's influence limited,

George F. Kennan recommended the policy of containment. Kennan was an American diplomat in Moscow after World War II.  In 1946, he sent what became known as "the long telegram" of his advice about what the USA needed to do about the Union of Soviet Socialist Republics (USSR).

Kennan advised not pushing the conflict too much, but instead just try to "contain" the Soviet Union and wait for their system to collapse under the weight of its own problems.  In the meantime, the goal was to keep the communist influence from spreading.

where is the

the quote by walter cronkite contributes to the central idea of the text by supporting the central idea. cronkite argues that what is deemed “right” for and in america may not be good for other countries. this supports the central idea of the text, that the vietnam war was unpopular in america for multiple reasons- including cronkite’s.