USA HISTORY

Detailed explanation-1: -During the last half of the late 19th century, Chicago proved to be the fastest growing city in the world. Overall, 15.3 percent of Americans lived in cities in 1850. By 1900, that percentage had increased to 39.7, and kept growing.

Detailed explanation-2: -Owing most of their population growth to the expansion of industry, U.S. cities grew by about 15 million people in the two decades before 1900. Many of those who helped account for the population growth of cities were immigrants arriving from around the world.

Detailed explanation-3: -The Northeast and Midwest experienced the most urbanization during the late 19th century.

Detailed explanation-4: -The increasing factory businesses created many more job opportunities in cities and people began to flock from rural areas to large urban locations. Minorities and immigrants increased these numbers. Factory jobs were readily available for immigrants and as more came to the cities to work, the larger the cities became.