In short, plant and animal domestication meant much more food and hence much...

In short, plant and animal domestication meant much more food and hence much denser human populations. The resulting food surpluses, and {in some areas} the animal-based means of transporting those surpluses, were a prerequisite for the development of settled, politically centralized, socially stratified, economically complex, technologically innovative societies. Hence the availability of domestic plants and animals ultimately explains why empires, literacy, and steel weapons developed earliest in Eurasia and later, or not at all, on other continents. The military uses of horses and camels, and the killing power of animal-derived germs, complete the list of major links between food production and conquest.

www.QuoteSweet.com