Compare and contrast the development of sedentary, agricultural civilizations in the Americas with that of those in the Afro-Eurasian landmass. In your essay consider the timeframes of such development on these two sets of continents, the types of animals and plants domesticated, religious belief systems, and political and social hierarchies and structures. In addition, please address the question of whether the differences or similarities are more significant in this process of development between these two sets of continents.