It's been a very long time since I read the first book, afraid I recall few details. The second book probably not as it covers the biological effects of the 'gr

It's been a very long time since I read the first book, afraid I recall few details. The second book probably not as it covers the biological effects of the 'great exchange' and IIRC doesn't retread the 1491 material. But I had those sorts of questions while reading, and generally do about books. I wish all were continually revised, or at least the articles on English Wikipedia about them would point out obsolete and incorrect claims.