BBC Timewatch documentary telling the story of the Black African Kingdom of Kush and its battles with ancient Egypt for supremacy of the Nile Valley. The kings of Kush ruled Egypt for 100 years and became the most powerful emperors of the ancient world. Though archaeologists were convinced Kush’s influence had been underestimated, they had lacked proof until the recent discovery of an inscription in a tomb that tells of an invasion by a Kushite army.

https://www.bbc.co.uk/programmes/b00b5vlq

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