Why were mesoamerican civilizations at he bronze age when they created bigger monuments than every civilizations in eurasia?
Why was mesoamerican metalurgy so bad then?

So then what are the pyramid's true measurements? I've done some research. Humboldt gave it a side measuring 450 meters, Bandelier gave it 300m, and Ignacio Marquina gave it 350 meters. Which one is correct then?