Analysis of information sources in references of the Wikipedia article "Twenty-fifth Dynasty of Egypt" in English language version.
The Napatans, somewhere around 900 BC conquered both Lower and Upper Nubia, including the all-important gold mines, and by 750 were strong enough to conquer Egypt itself, where their kings ruled for nearly a century as the Twenty-Fifth Dynasty
He moved his capital to Thebes and became king of Kush and Misr (Egypt) forming the 25th dynasty. Kushite power stretched from the Mediterranean Sea to the present Ethiopian boundary. Some Egyptians welcomed the Kushite presence and saw them as civilised people and not as barbarians. Their culture was a mixture of indigenous Egyptian and Sudanese elements and physically their appearance included Egyptian, Berber-Libyan and other Mediterranean elements as well as the Negroid blood coming from the region of the fifth and sixth cataracts
Smith, who has been excavating the ancient site of Tombos in modern Sudan (Nubia) since 2000, has focused his research on questions of identity, especially ethnicity, and intercultural interaction between ancient Egypt and Nubia. In the 8th century BCE, he noted, Kushite rulers were crowned as Kings of Egypt, ruling a combined Nubian and Egyptian kingdom as pharaohs of Egypt's 25th Dynasty. Those Kushite kings are commonly referred to as the 'Black Pharaohs' in both scholarly and popular publications. That terminology, Smith said, is often presented as a celebration of black African civilization. But it also reflects a longstanding bias that holds the Egyptian pharaohs and their people weren't African — that is, not Black. It's a trope that feeds into a long history of racism that traces back to the some of the founding figures of Egyptology and their role in the creation of "scientific" racism in the U.S. [...] 'It has always struck me as odd that Egyptologists have been reluctant to admit that the ancient (and modern) Egyptians were rather dark-skinned Africans, especially the farther south one goes," Smith continued.