The end of GGS

So today we finished the Guns, Germs, and Steel video. we learned that most of the 14 domesticated animals were form Asia, the Americas, or Europe and Papua New Guinea has none. They have pigs that were brought to them when the Europeans came but that was it. We talked about how the Fertile Crescent has a lot of these animals and also good land to farm in, making it fit for human civilization. about 1,000 years after civilization in the Fertile Crescent, the land was so overused it was unfit to sustain human life and the people who lived there had to move somewhere else.