Mass transportation revised the social
and economic fabric of the American city in three fundamental ways. It
catalyzed physical expansion, it sorted out people and land uses, and it
accelerated the inherent instability of urban life. By opening vast areas of
unoccupied land for residential expansion, the omnibuses, horse railways,
commuter trains, and electric trolleys pulled settled regions outward two to
four times more distant from city centers than they were inthe premodern era.
In 1850, for example, the borders of Boston lay scarcely two miles from
the old business district. By the turn of the century the radius extended ten
miles. Now those who could afford it could live far removed from the old
city center and still commute there for work, shopping, and entertainment.
The new accessibility of land around the periphery of alm A. Types of mass transportation B. Instability of urban life C. How supply and demand determine land use D. The effects of mass transportation on urban expansion [多项选择]Talking about transportation options
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