The effect of weather, soil composition, and geography on ancient South and Central American Indian societies, particularly the Aztec, Maya, and Andean "indians."
A comparison of the Mayas and the Aztecs, two cultures that lived far apart from each other in time and place, but who still shared many similarities. These similarities include the relationship between humans and supernaturals; the need to satisfy their gods through rituals of blood sacrifice; the ideological function of religion in society; and the expression of religion in art.