What became the dominant symbol of American life in the 1950’s

Automobiles and Highways

Explanation:

The automobile and the Interstate became the American symbol of individuality and freedom, and, for the first time, automobile buyers accepted that the automobile they drove indicated their social standing and level of affluence.

kennedy used a range of this to develop a 'flexible response' plan for any international crisis. “he also expanded the it was important, because it ordered the fall of khruschev.

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