What is buying on margin?
(it's not c)

a. influencing exchange rates by buying or selling another nation’s currency.

b. creating new shares by establishing part of a company as a separate entity.

c. buying and selling among investors to misrepresent the popularity of a stock.

d. buying stocks on credit with only 10 percent of the initial investment.

b. ensure mutual protection from communism.

.

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.

"they had a large area of land that they owned."

sorry i tried to but i didn’t get it