I think you're in the wrong century. Did you know that we are closer to tha age of Cleopatra than she was to the builders of the pyramids?
Say did you see that thing about how the Sphinx dates to about 10,000 B.C. because it was weathered by water and not wind? That blew my mind. I started wondering if originally there was such a monument to each of the signs of the zodiak scattered over the earth and that that was the only one whose remains are still recognizable.
What were people doing for 100,000 to 200,000 years from the emergence of homo sapiens until the rise of Egypt (in full cultural flower) in 3,000 B.C.? Bumping around in the jungle? Scratching out a survival? Living in cities and civilizations? I don't think it took them that long to decide that one color's going to be red and another blue or that 2+2=4. If they were like we are today, their minds were working. But if they had advanced civilizations, where are the records and the remains? Can geological forces erase them that thoroughly? What do you think?