Answer:
Soon the United States had more large cities than any country in the world. ... Much of America's urban growth came from the millions of immigrants pouring into the nation. ... Did the new arrivals mix together in the American “melting pot” and ... known as Tammany Hall, seemed to embody all of the worst of city machines. One important result of industrialization and immigration was the growth of cities, a process known as urbanization. Commonly, factories were located near urban areas. These businesses attracted immigrants and people moving from rural areas who were looking for employment. Cities grew at a rapid rate as a result.
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