Final answer:
The growth of suburbs in postwar America was driven by the availability of automobiles and the shift to white-collar jobs.
Explanation:
Suburbanization in postwar America was primarily led by the availability of automobiles and the Interstate Highway System, which allowed families to move to suburban areas for a better quality of life and lower cost of living. Additionally, the shift from industrial to white-collar jobs played a significant role in motivating people to seek housing in suburban neighborhoods for a more comfortable lifestyle. This transition not only reshaped urban landscapes but also brought about changes in commuting patterns and societal dynamics.
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