USA HISTORY

Detailed explanation-1: -“Cities grew because industrial factories required large workforces and workers and their families needed places to live near their jobs. Factories and cities attracted millions of immigrants looking for work and a better life in the United States.”

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: -As Americans moved west after the Civil War and during the twentieth century, western cities appeared almost overnight and expanded the pace of urbanization. Continued industrialization, immigration, and general population growth further increased the number and size of US cities.

Detailed explanation-4: -Congestion, pollution, crime, and disease were prevalent problems in all urban centers; city planners and inhabitants alike sought new solutions to the problems caused by rapid urban growth. Living conditions for most working-class urban dwellers were atrocious.