Why was the Union victory at Vicksburg important? A. It convinced the president of the Confederacy to surrender.
B. It caused France and Great Britain to come to the aid of the Union.
C. It led to Confederate General Lee being fired.
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D. It allowed the Union to control the Mississippi River.

c. as a force against soviet invasion of afghanistan

the answer is a) to be able to obey them.

your answer would be (b)

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.