DO after a doctor's name means that the doctor is a graduate of an osteopathic medical school in the United States.
The Difference Between The Aztec, Maya, Inca, And Olmec. âIt will happen â a seeing [. . In A Nutshell. The Olmec, Mayan, Incan, and Aztec civilizations are some of the greatest ancient civilizations in history, and yet we know very little about them compared to other parts of the world.
History of the Aztecs and the History of the Maya and History of Mesoamerican civilization. There are wiki entries for Mayan Civilization, Aztec, Inca Empire, Mexica, Mesoamerica (nice timeline included here; very good article), Andean civilizations. All of these entries are good starting places for further research.