First off, learn to listen first...America developed due to acceptance and a common ground. Think the Indian Nations could have developed our country? As to treatment, race had a relevant function in development of culture. Get back into the real world as to causes. Don't think that the Indian culture of that era, and their extreme barbarism didn't deserve the degree of treatment that they received?
You are cherry hunting if you believe that.
You are SO naïve...culture is the actual function in deeds and measurement of social acceptability. That determines the longevity of a society, and not power and greed.
The Hispanic culture, ultimately, was in chains as to social class, religious extremes, micromanagement by government, and cash flows away from where it was needed to build upon.
The cultural base of the Anglos from Europe weren't chained to anything beyond mercantile and fairness concepts.
One can cherry plunk there as desired, but that didn't also have the negative drain of a centuries old customs and culture. No one in the real world in America, starved beyond the first few years...unlike class distinctions in Europe at that time, despite equal wealths. Oh, and Spain, despite a progressive Charles III and Charles IV, was incumbered and handcuffed by unions.
That followed them to America as well...
Go ahead and live in your fractured past as one chooses..