The main focus is on the history and culture of the peoples of what is now central Mexico, with particular attention given to Texcoco, Azcapotzalco, Tlaxcala, Tlatelolco, and Tenochtitlan as well as the Totonacs living further east, towards the Gulf of Mexico. Nevertheless, the work also includes among its subjects other peoples living in Central America (Honduras and Guatemala), in the Caribbean, and in North and South America (specifically: Florida, New Mexico, Venezuela, Colombia, the Andean civilisations, and even parts of Brasil).