What is the analytical question ask by this mini q

Which describes a significant different between the north and the south in the year leading up to the civil war

According to some historians which marks at the beginning of the us civil war

This table shows the number of cities in north carolina from 1860 to 1910. which factor was responsible for the change in population from 1860 to 1910? a. the expansion of railroad lines cities grow. b. the growth of farms brought workers into the state. c. the civil war resulted in residents leaving the state. d. the rise of corruption led many residents to leave cities.