What innovation allowed for the mass production of goods?
a. cotton gin
b. sewing machine
c. industrial lubricator
d. interchangable parts

It's probably the cotton gin, it was known for producing cotton like crazy.

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