I went into this to try to learn about the cultures and ecology of Pre-Columbian America and instead a large part is about Europe before Columbus's voyage and the latter third of it is about after the colonists got there. Meanwhile, only a handful of the native cultures are talked about and only briefly in a doc that is supposed to be about them, if you are going by the title.
On a technical level, the production value is high and well done. Still considering the title, I think the writing is lazy, regurgitating easy to research material, rather than anything that hasn't already been done over a trillion times already.