There are some interesting perspectives often involved in many of these anthropological studies. Clearly, there was something remarkable going on in pre-Columbian, Central America. I doubt we could ever say definitively, that many of the conjectures offered are incontravertable. We each have a certain amount of preconceived notions concerning such subjects and anthropologists are as human as the next person.
As monumental as the Aztec and Incan societies appear to have been, they also seem to have some glaring ironies or contradictions. For example, there is no evidence they ever developed the common wheel. It would seem almost incomprehensible that an obviously clever culture would overlook such a simple device.
It is undeniable that a very large population first dissapated, then were decimated. By most accounts, it appears certain groups broke away from the central cities and built smaller (hidden?) cities in mountain fastness (e.g. Machu Picchu). Can we say with any great certitude exactly what cause the downfall of that civilization ? I think it unlikely, since there are so many possibilities; disease, Spanish depredations, upset of agriculture such as crop disease, interrupted irrigation systems and overuse of soil. There were some brutal practices by both royalty and the priesthood which could have led to internal or at least intertribal warfare. The most popular hypothesis concerning Easter Island's original population, suggest this as the reason for it's disappearance.
So often we find conclusions are based on a web of suppositions whereby if one point is disproven, the whole contention collapses. I'm not saying this is true here, but so often entire book are based upon and written around the author's "wishful thinking". Anthropology is not my forte, so anyone's opinion is as valuable..it's just my $.02.
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From YT;
" At the end of his book, Mann puts forth the argument that American ideas of liberty and freedom have more to do with American Indians' views of same (that's where Locke & Rousseau got the ideas) than anything coming out of Europe. I think he may have a point (the linked article doesn't contain that argument, but it's in the book)."
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This opinion by Mann, does enter into my course of studies and I respectfully disagree with him. Frankly, that conclusion does smack of wishful thinking. Yes, some Amerind cultures had a form of Democracy, notably the Iroquois confederacy located primarily in what is now NY State. However, that culture was a matriarchial democracy, and thus doesn't hold water when compared to out constitutional form of government, which was more of a paternal republican form of government.
More likely, our constitutional freedoms were engendered by the "great awakening", which commenced about 1720 and continued through the late 1800s.
Our freedoms did come from Europe, but in a manner which in some ways paralleled the Central American model. Europe long languished under an oppressive royalty and priesthood, much like the Central American situation. There were renegade groups (heretics?) hiding in the mountain fastnesses, driven there by the dominant church and their accepted "royalty".
With the advent of the printed Bible and soon thereafter the reformation, idea of the dignity of every man and the stirrings of liberty for all was reignited.
Soon came Wycliffe, the Lollards etc., soon leading to the Seperatists (Pilgrims), our original New England colonists. These Christians took Jesus' admonition as recorded by John, very seriously:
" And ye shall know the truth, and the truth shall make you free" (John 8:32)
Shortly after European arrival, the wars started with local tribes..Pequot war, King Philip's war, continuing through the French & Indian war and the war of the revolution, where most tribes sided with our foe. With this background and the savage depredations throughout the colonies, it is highly unlikely the framers would have borrowed much from the Indians.
It is far more likely (IMO) that John & Sam Adams, Paul Revere etc would have taken their lead from the freedoms exhibited by the various, self-governed New England towns, while men such as Jefferson, Patrick Henry and the rest may have taken their lead from the virginia House of Burgesses. A sterling example was Roger Williams' Rhode Island colony, which offered as complete a freedom as ever had been seen. Further evidence comes from the fact that the federal model follows the New England town model of republicanism as opposed to the pure democracy of the indian tribes.
No, our forefathers had a plethora of models upon which to pattern our Declaration of Independence and Constitution, without resorting to the tribes who even at that time, were killing and scalping their fellow citizens living on the frontier.
Just my 2 cents..take it or junk it..