In the late 19th century, with the rapid process of industrialization andurbanization, there sprang up a great number of newly industrial cities inthe northeast and midwest areas in America.

• 19世纪后期，随着南北战争的结束，美国工业化和城市化进程迅猛加快，这种形势下，在东北部和中西部地区形成了一大批新型工业城市。