Maybe you shouldn't wave your "I do not know what I'm talking about" flag in public. 

Smart people know that Native Americans were composed of thousands of nations, some more advanced in many ways than the Europeans who conquered them. For example, the Inca were master horticulturists. The Mayans had a calendar that was more accurate than the one Columbus relied on and they were master astronomers. 

These and other facts blow your "Indians were mesolithic" statements right out of the water.