The ancient Greeks believed that using  was the best way to solve problems. They used careful measurements and observation to develop the natural  theory, which stated that the Earth was the center of the universe. This idea would persist for more than a thousand years.

false

explanation:

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.