Why did many people leave the rural areas of the united states to live in cities in the late 1800s?
select one:
a. many people moved to the cities for increasing job opportunities.
b. the federal government passed laws which required all african americans to move into the cities of the east coast after the civil war.
c. there was no more fertile land available in the south and west in the late 1800
d. the rise of the ku klux klan during the 1870