One was built with no power tools, no heavy machinery, and a much smaller population but took about half the time of the one built today. Does this narrative make any sense to you?
They call it the dark ages but it was the golden age. Everything they teach us though is branded for a very specific reason. Teach us a his story that erases the advanced civilizations of our past and dismisses the magnificent architecture of that period as built by people living in squalor but they were all magnificent architects, builders, and masons.