I read a National Geographic a year ago, I'm sure it wouldn't be hard to find. The cover article was on the Nubian Temples built travelling up the Nile, in the Sudan, and the Egyptian temples built travelling down the nile. They meet at a great bend in the river and there two sytles stare eachother in the face and don't go any further. The article suggested that the Egyptians were travelling down the river with the aim to conquer whatever civilisation laid in their path. It would make sense that they would do this as the source of the nile was the source of their livlihood. The magazine showed the sandals of pharohs in that time. On the bottom of the sandals were pictures of Nubians, so the pharohs could feel as if they were constantly trampling them, I'm quoting the article.

If Moses and the Israelites were really Egyptian, then the Egyptians were really Ethiopians who left for some odd reason, maybe the same reason as Moses left Egypt. Egyptians in the height of their time did not see themselves as Nubians, that has been established, and it seems to exude a tone of racial superiority. Life started in Ethiopia so Ethiopia is the root. Without Ethiopia the Egyptians never would have existed.
but then again, faranjis write National Geographic

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