<P> Levittown is the name of seven large suburban housing developments created in the United States of America by William Levitt and his company Levitt & Sons . Built after World War II for returning veterans and their new families, the communities offered attractive alternatives to cramped central city locations and apartments . The Veterans Administration and the Federal Housing Administration (FHA) guaranteed builders that qualified veterans could buy housing for a fraction of rental costs . </P> <P> Production was modeled on assembly lines in 27 steps with construction workers trained to perform one step . A house could be built in one day when effectively scheduled . This enabled quick and economical production of similar or identical homes with rapid recovery of costs . Standard Levittown houses included a white picket fence, green lawns, and modern appliances . Sales in the original Levittown began in March 1947 . 1,400 homes were purchased during the first three hours . </P>

What was the significance of levittown in the 1950s
find me the text answering this question