Answer:
City and population growth
Step-by-step explanation:
Urbanization in the United States after the Civil War led to a significant increase in population and the growth of cities. The country saw an expansion in industry and a rise in the number of people living in urban areas. The railroads played a vital role in this process, connecting cities and facilitating the movement of people and goods. As a result of urbanization, the country also saw improvements in public education and increased social reform movements. However, this process also brought negative consequences, such as overcrowding, poverty, and poor living conditions in cities.