Friend, this is just not true. Thousands of years of large sophisticated governments and civilizations in what is now Mexico and farther south. Its reductive to the point of being completely wrong to think of the Americas in this way.

Teotihuacan shows excellent astronomy, civil engineering, and a very large implied economy built so long ago the name of the people group is not recorded.

Did Europe rock the Americas, hard? Yes. Was it because they were more advanced? In wartime tech, and psyops, yes. The rest? I would be cautious.