My grandfather grew up on an Oklahoma Cherokee Reservation. His father was an Indian Agent.In the 60s and 70s, the facts of history were still readily available, and taught in US schools.Now, the truth is as obscured as the Jewish hollocaust deniers wish their version could be accepted.
I could wish the tribal/reservation Indians had as powerfull an ethnic presense to force the truth to remain obvious.But the "indians" are mostly dead now.I will not play a research game with you to prove the truth.You appear not to be a serious history expert. You may claim whatever you wish.Repetition does not make it fact.
It is virtually impossible that there were 200 million inhabitants of the Americas in 1492.