Chapter 1: Diamond right away creates the accumulation that humans are from a lineage of other animals in Africa from about seven million years ago. He also stated that human ancestors began walking around 4 million years ago and moved to different continents over one to two million years ago. 100,000- 50,000 years ago, not long after human fosils were found resembling homosapiens, our race created art and technology called The Great Leap Forward time period. After that human race expanded its territory and the colonization in America began about 12,000-13,000 years ago. It also explains how many animals and other creatures existed but many of them were …show more content…
The clause include the continental differenes in wild plant and animal species that could be dometicated, the orientation of axis for a continent, the relative isolation of people, and the continental differences in size of land and