Do u know hwat a Native American, Amerindin or Nican Tlaca is?

Your question (which you answered yourself) is actually somewhat informative in a rather truncated fashion. The problem with your "free roaming" scenario is frankly I doubt any countries in the North or South American continent would be accepting of people entering or leaving at will. Security concerns and all. It's 2009 not 1699 so that style of nomadic life probably couldn't work. Nonetheless you do present a thoughtful if quite misspelled thesis.