You're right about the general question of slaves. Apparently it was cited as 100000, but only 10000 bodies were found buried around the area. https://www.professorbuzzkill.com/slaves-built-the-pyramids/ But if you think about it, blacks can carry things and follow directions if they are simple and provided with free food and shelter still to this day. Hence welfare and affirmative action. Either way the slaves were probably closer to 10000 and apparently not jews, so that means blacks.