Prosperity — how much an economy produces, how much people earn — is more easily measured than is quality of life. During the 1950s, however, the American definition of the good life emerged with exceptional distinctness: a high value on consumption, a devotion to family and domesticity, and preference for suburban living. In this section, we consider the third dimension of that definition: suburbanization. What drove the nation to abandon its cities for the suburbs, and what social and political consequences did this shift have?