The increase in the size of cities due to the migration of people into them is known as O Revolution
O Mercantilism
Industrialization
O Urbanization

Just think, why was it effective? -it appeled to critics because it was written well, that made it noticeable to the public including the white population-it was also recognizable to the african americans because it was about their heritage.-it was powerful just keep finding more points and elaborate on them. message me if you need more

The natural habitat around them