Imhotep made the first pyramid by stacking mastabas on top of each other.
The technology was pushed until the biggest pyramids at Giza.
A strong civilization with control of their own resources, economics and education with thousands of years of uninterrupted progress without too many major invasions can lead to humans doing amazing things. Stone masonry was one of the amazing accomplishments of the Nile valley Kushytes & more specifically, the Kemetyu.
All that alien shyt can kick rocks
Yep and back then...it was actually giants doin most of the work...look at the walls all them muhfukkas are huge..