Blacks had a civilization when whites were still dwelling in caves? They can’t claim the Egyptians as that’s the wrong race. Africa wasn’t populated by blacks alone. They claim the whole continent but shouldn’t. Not only that, even during the time of the Egyptians, Europeans weren’t running around using stone tools and grunting at each other. The level of miseducation is astounding. Looking at ancient Egyptian wall art, they pyramid builders were white (or Middle-Eastern tan, actually).
Before Egypt, agriculture was developed in Mesopotamia and the Levant. Ancient white people from those regions probably came south and took over the fertile Nile valley, killing off any blacks who were there.