History followed different courses for different peoples because of differences among peoples’ environments, not because of biological differences among peoples themselves.

Jared Diamond is an American geographer, historian, anthropologist, ornithologist, and author best known for his popular science books on a wide variety of topics. Originally trained in biochemistry and physiology, Diamond is known for drawing from a large swath of fields, including anthropology, ecology, history, geography, socio/political movements and evolutionary biology, often interwoven with a psychological lens.