Why did so many Americans believe there was a crisis of power by the end of the 1950s? Had the nation, in fact, become less powerful?

The 1950s were a decade marked by the post-World War II boom, the dawn of the Cold War and the Civil Rights movement in the United States. ... For example, the nascent civil rights movement and the crusade against communism at home and abroad exposed the underlying divisions in American society. The nation became less powerful after the war.

Explanation:

answer: they arrived in new york.

. political or economical policy that isolates a country from participating in international relationships. it has been suggested that the united states participates in isolationism because of its lack of involvement in particular wars or alliances.