Wow! Good find. Thats a VERY interesting read, if not more...

Could anyone summarize that for the people who have very short attention span, like me?

Well, that would make perfectly good sense. Native Americans were Hell Bent on keeping the enviroment around them in the best condition it could be and at the same time have it work out good for them. The majority of them seemed to just went to live happily, not like Europeans who wanted Control. It's just too bad exploration had to happen and destroy them. I couldn't imagine how well off this planet would be off now if they kept up that way of life, all the tribes.