Which of the following cities went from a small midwestern town to a major metropolis between 1840 and 1900?
A. New York
B. Philadelphia
C. Chicago
D. Rochester

C is the right answer

Explanation:

In 1840, Chicago had a population of a little under 5000. By 1900, when the city had become a rail hub and contained the nation's largest stock yards, Chicago's population had surpassed 1 million.

workers of lowell mills were greatly benefited for the waltham type of work which was more a paternalist kind, trying to protect the integrity of this little girls coming from small farmers and providing an adequate place of work, this in an effort to avoid the issues of bad place conditions and immorality that the people in bigger industrialized cities of great britain were experimenting.