What led to the need for levittown style suburbs and communities after world war ii?

In 1947, entrepreneur Abraham Levitt and his two sons, William and Alfred, broke ground on a planned community located in Nassau County, Long Island. Within a few years, the Levitts had transformed the former farmland into a suburban community housing thousands of men many of whom were veterans returned from World War II and their families.The Levitts would go on to create two other communities in New Jersey and Pennsylvania, and the legacy of the first Levittown has become a legend in the history of the American suburbs. Even at the time, the iconic community represented for many all that was hopeful and wholesome for the estimated twenty million Americans who followed Levittown’s lead and made the trek to suburbia in the 1950s.
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Because of the Housing Shortage at the time

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