But let try a last time :
1- Egypt had more in common with the fertile crescent, in civilization and commercial wise.
2- Egypt contact with Subsaharan Africa was first with Nubia, Egypt making contact with Nubia. If Egypt was an African civilization the flow would have been been inverse ie influence coming from Nubia to Egypt.
3- Apart from the cultural elements fruit of the Egyptian contact, Meroe had more in common with the rest of Sub-sahara African peoples, and in fact some traces of contacts exists.
4- Most sub-Saharan people derive from the same Bantou migration of 1000BC and have the same civilization base, clearly different from the Khoisan and Pigme who were there before them.
5- None of the Elements of Egyptians, might tombs, hieroglyphs etc were found in any other African people, except Meroe which got them by virtue of contact.
Egyptian civilization being in no way fruit of the Bantou group that gave birth to present Africa, present North Africa is more middle eastern and arab than anything else, therefore Egypt wasn't an African civilization.