In part two of the book, first thing caught my attention is that Mann also talked about Mesoamerica which I have read on Snow, Chapter 7. What’s interested here is that these two authors write about the same thing which is development of agriculture in this region. A really incredible fact to me that by that time, people already knew how to use crops to grow vegetables. They also involved themselves in a lot of social activities of a big population. People work for others in farms to get food and be survived. People by the time lived in complex cultures which had more than one class in society. Secondly, Mann pointed out so many evidences said that Indian might have been living there for long long time before European came. He also mentioned that these Indians ancestor had so many same genetic features to Haplo group which is now considered ancestor of Siberia. Part three of the book, I got to know about Maya tribe. I don’t know if that’s right calling it a “tribe”, like I always said I don’t know much about these long time history facts, I feel like every words I use might be wrong. One thing I have read so many time that, people back then died, or disappeared was a normal thing since they had all kind of problems, hunger, killing each other to be survived, eating wrong things, poisonous foods. All of those reasons explain why people disappeared and killed. Like how Maya people died and disappeared. However, I have been wondering after reading this part, that if they all disappeared, then how do scientists now know or even confirm that those evidences they found was belong to Maya. In stead, those fossils were found might be some other tribe that existed. I’m not saying that I don’t trust what said in the book, I know that once they came up with the conclusion, they must have went through the whole big process of investigate the hypothesis that they were talking about. However, I was just wondering why would they know? There might be something else that I got confused reading in the book. Second thing that I’m interested in is that if they somehow knew that Maya was totally disappeared, there must be other tribes, other groups of people just died and disappeared too that all scientists, archaeologists nowadays still have no clue about, or no evidence at all to start search about them yet. Last thing that I have to talk about is how Indian