However , the Kushites were gradually driven back to Napata by an Assyrian invasion and then the resistance of the Twenty - sixth Dynasty kings .
Kush reached a height under Piye , who conquered Egypt and founded the Twenty - fifth Dynasty .
The Kush were gradually driven back to Napata by an Assyrian invasion and then the resistance of the Twenty - sixth Dynasty kings .
Kush reached a height under Piye , who conquered Egypt and founded the Twenty - fifth Dynasty .