Ow did the mobility of Americans affect cities? What led to the industrial boom in the United States in the early nineteenth century?

Answer the following questions as comprehensively as you can

a. How did the mobility of Americans affect cities? What led to the industrial boom in the United States in the early nineteenth century? Why did the middle class become larger and more distinct in this period?

b. How did many people in the democracy justify both slavery and the forced removal of Native peoples into the so-called Indian Territories? In what ways did Indians and free African-Americans try to protect their communities in Jacksonian America?

c. Explain the appeal of the evangelical movement in this period. How did these evangelical activists influence American culture in the 1830s and 1840s?