Question

definition
residential areas that grew rapidly in the 1950s due to the demand for housing, mass - produced homes, and the boom in automobile ownership.

Explanation:

The definition describes suburban developments (specifically "suburbs" or more precisely "Levittown - style" suburbs) that expanded in the 1950s. This is related to post - WWII housing trends, automobile - driven sprawl, and mass - produced housing (like Levittown homes). In the context of history (a subfield of Social Science), this is about the historical development of residential areas in the 1950s, including factors like housing demand, mass - produced homes, and automobile ownership driving suburban growth.

Answer:

Suburbs (or more specifically, the post - WWII suburban developments like Levittown - type suburbs)