How can we know that the Great Pyramids weren´t built by slaves but by paid workers?

Question

How can we know that the Great Pyramids weren´t built by slaves but by paid workers?

In: Other

Answer 1

the stones are cut and fit together so well you can’t even slide a credit card between them.

and it was done with just copper tools and sand as abrasive. It’s not just paid workers it was very skilled workers