What African civilizations benefited from the Nile River?

Egypt grew wealthy from the gold found in Nile River sediment What did the Nubians receive from African countries, other than Egypt, when they  Other civilizations also benefited from the knowledge of the Egyptians.

hoped this helped :D

d.

many people believed they were convicted solely because they were anarchists.

1. darius the great     persia  

2. piankhi       nubia

3. ezana       aksum

4.     nebuchadnezzar     babylonia

5. shalmaneser iii     assyria