The Pyramids were built with BEER!
All workers got free Beer and as much as they wanted, along with Meat at every meal (most Egyptian farmers/peasants got meat once or twice a month). They did get health care and for working on the project—tax relief. BUT the most important thing they got was the promise of ETERNAL LIFE for them and their families in the life to come! The power of religious belief is mighty! I only hope they got this reward at least and got to party with the Gods in their version of heaven.
for 1 million stone blocks to be laid down in 20 years, they would have had to do one block every 10 minutes
I think it was Aliens and/or some machine or unknown physics (like anti-grav) that was used to build them.