Why was the nullification crisis significant? What other document(s) and event(s) support the idea of nullification? 

During the 1920s, which president atoped a laissez-faire toward business, which bring about great depression

What was a result of the use of farming machines

The factory system of the early-19th century caused a) a decrease in farm production. b) an increase in rural population. c) an increase in urban population. d) high unemployment in other areas.