industrial era, civil war and reconstruction era, westward expansion and American revolution in chronological order.

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.

what

sharecropper (you may punch em in the face if im wrong lol)

a big one is

to appoint and regulate officers of the land and naval forces,

which caused much controversy ending the articles