Ancient Civilizations in the Americas

The oldest civilization recognized by mainstream archeologists is the Norte Chico circa 3,500 to 1,800 B.C. or about 1,700 years. https://en.wikipedia.org/wiki/Norte_Chico_civilization

The longest civilization was the Mayan circa 2,600 B.C. to about 900 C.A. or about 3,500 years, almost 1,000 years longer than Ancient Egypt. I am puzzled by this civilization that achieved so much in the areas of science, medicine, astronomy, and many other areas but totally missed out on the wheel.

The Olmecs thrived from 1,650 B.C.A. to 350 B.C.A. or about 1,300 years.

The Aztecs from 1,345 – 1,521 or about 176 years.   

And then finally the Incas from 1,400 – 1,532 or about 132 years.  

I am puzzled that the Incas, in such a short time, were able to have the ability to move over 20,000 massive stones (some weighing as much as 300 tons) five miles from a quarry site, across a river, and over 1,000 feet up the side of a mountain. Once there they were able to carve them so that they all fit together so close (without the use of mortar) that even a razor cannot penetrate the joints.  https://en.wikipedia.org/wiki/Sacsayhuaman