[mad_as_he$$]

Link is broken for me(and possibly others).

[sunny bonobo]

Doesn’t work for me either.
https://en.wikipedia.org/wiki/Slavery_in_ancient_Egypt
https://www.sciencefocus.com/science/were-the-egyptian-pyramids-built-by-slaves
But there’s plenty more articles out there.

[sunny bonobo]

https://www.harvardmagazine.com/2003/07/who-built-the-pyramids-html