What was the history of suburbia?

The history
of the suburbs in the United States has been tied very strongly to the history of
transportation.  The more that transportation has become available, the more that suburbs have
arisen.  This process of transportation advances leading to suburbanization took off in a really
big way in the 1950s.

Before the 1950s, suburbs had existed on a relatively
small scale.  They started with the rise of street cars and local...