Jared Diamond in his book Guns, Germs, and Steel: The Fates of Human Societies has gone repeatedly explaining many reasons as to why places like Eurasia and New Guinea developed so differently. The argument of chapter ten is that the shape and major axes of continents affect the distribution of crops and domesticated animals. The continents that Diamond uses is Africa, the Americas, and Eurasia. With Africa and the Americas both have their major axis that are longitude (north to south) while Eurasia has a major axis that is latitude (east to west). The Fertile Crescent is one of the places where people first domesticating plants and animals. Those domesticated plants then spread to the surrounding areas since people would rather grow the
