Go fly a racists kite, will ya.  Technology displaced many tribal cultures worldwide, stop the crying.  More Natives have assimilated into the majority culture, that have not.  I know some that are highly educated and live in NY penthouses.  Slavery was practiced all over the world and still in in "brown" and Black nations only!  You are sad that you buy into the leftist propaganda.  America has saved more brown people from genocide at the hands of the Japanese, Germans and others than it has hurt!