... middle class emerged, and the kinds of foods that were, and were not, con-sumed began to identify and differentiate. Upper- and middle-class diets improved but that of the landless changed from ... Coast; and in South America it was grown by both highland tribes of the Andes and rainforest peoples of the Amazon. And as maize diffused from one locale to another, Native Americans bred and ... with the fall of Rome. Sheep, goats, and pigs were retained for food, and pigs also for their scavenging ability, and cattle as draft ani-mals. But guinea fowl and peacocks, favorites of the Romans,...