Completely discuss the existence of urban slavery in the North and the South. Why was urban slavery necessary after the American Revolution? Explain. Furthermore, discuss how urban slavery and the...

Completely discuss the existence of urban slavery in the North and the South. Why was urban slavery necessary after the American Revolution? Explain. Furthermore, discuss how urban slavery and the existence of a free black population was a threat to plantation slavery in the South? How did slaves and whites react to the existence for free blacks and urban slavery in the North and the South?