Explain the reason behind the abandonment of Chaco canyon . Why is there more then one reason behind its abandonment

It is contended that, unlike most other sites, no one returned. ... I ask if any of these features or some combination of them helps explain why the site was abandoned. ... Until recently, the dominant cause cited for abandonments was ... the human population of Chaco Canyon grew, its demands on the

Explanation:

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since most of current immigration into the u.s., both legal and illegal, is coming from latin america. it would be very difficult to imagine or rationalize a country my fellow citizens are trying desperately to flee into, would pose a threat to my prosperity or freedom. since the u.s. has a long history of intervention, but no record of permanent occupation, i would not feel oppression is the main objective.  

the largest free trade nation, along with the largest gdp in the world wanting to expand it's economic policy on us, and including us, could only be positive. the u.s. government has no interest in, or way of simply forcing american culture on us. and has no track record of it. other nations that adopted american social culture, or "americanization" did so voluntarily, mainly through the choice of allowing american businesses and u.s. citizens to come into their nations, as free operatives.