USA HISTORY

Detailed explanation-1: -The 1920 census marked the first time in which over 50 percent of the U.S. population was defined as urban.

Detailed explanation-2: -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-3: -In the decades following the Civil War, the United States emerged as an industrial giant. Old industries expanded and many new ones, including petroleum refining, steel manufacturing, and electrical power, emerged.

Detailed explanation-4: -Answer and Explanation: The United States became urban largely as a result of industrialization. As many advances made the economy more efficient, it became far more productive to work in factories or other employment in cities, instead of on a farm. This drove many people to urban areas.