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what is an oligarchy?

a) a state or nation in which the supreme power is actually or nominally lodged in a king, queen, or emperor.

b) a political regime where most political power effectively rests with a small segment of society.

c) when citizens make decisions about government.

B) A political regime where most political power effectively rests with a small segment of society.

Explanation:

A few people or a small group has power over their country.

the answer is use of support  

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.