The correct answer is letter C.
Explanation: Nubia could use elements of Egyptian culture to create its own imperial power. Nubia has been in constant contact with Egypt for much of its history, and Egypt has at various times advanced the region with military and colonizing expeditions. Nubia, however, has developed independently of Egypt since prehistory.
4. Cotton Gin harvested cotton
5. Because the cotton gin could harvest so much more, cotton farmers would buy and work more slaves for more profit.
6. A few major ones were immigration, making railroads, and using tariffs to ward foreign countries away from competing with the American market.
7. Industrial Revolution, I think the answer they want you to give is being blocked off from trading with England and France.
It was c) The Manhattan Project
