When did ancestors of modem-day humans first appear?
o
around 200,000 b. c.
o
around 10,000 b. c.
o
around four million years ago
o around 3500 b. c.

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.

it would be a. that is the only one i could think of

which specific shipwreck are you talking about?