When inventions like the cotton gin were invented, more slaves were needed to pick cotton.
The Great Migration, sometimes known as the Great Northward Migration or the Black Migration, was the movement of 6 million African Americans out of the rural Southern United States to the urban Northeast, Midwest, and West that occurred between 1916 and 1970.
Answer:
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Solution,

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Explanation:
Plato and Aristotle are the two most important Greek philosophers. Their work has been the main focus of interest for students of philosophy and specialists.
They all used the same routes to travel the ocean