 This trend has fueled homebuilding, but some municipalities have found it is difficult or impossible to generate enough new revenue from development to sustain or expand the infrastructure needed for this type of growth, which has come to be referred to as sprawl.Critics of suburbia describe a host of social costs stemming from these settlement patterns characterized by single-family homes, residential and commercial districts separated by zoning, and the lack of transportation alternatives to the personal vehicle in order to access employment, recreation, services and education.Bowling Alone is one such critique.