NUCLEAR AREAS
Now comes the last of my definitions. A region with a natural environment which included a variety of wild plants and animals, both possible and ready for domestication, would be a central or core or nuclear area, that is, it would be when and if food-production took place within it. It is pretty hard for me to imagine food-production having ever made an independent start outside such a nuclear area, although there may be some possible nuclear areas in which food-production never took place (possibly in parts of Africa, for example).
We know of several such nuclear areas. In the New World, Middle America and the Andean highlands make up one or two; it is my understanding that the evidence is not yet clear as to which. There seems to have been a nuclear area somewhere in southeastern Asia, in the Malay peninsula or Burma perhaps, connected with the early cultivation of taro, breadfruit, the banana and the mango. Possibly the cultivation of rice and the domestication of the chicken and of zebu cattle and the water buffalo belong to this southeast Asiatic nuclear area. We know relatively little about it archeologically, as yet. The nuclear area which was the scene of the earliest experiment in effective food-production was in western Asia. Since I know it best, I shall use it as my example.