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.
â¢ The Aztec use of the calendar and the Maya writing system both illustrate that pre-Columbian cultures in the Americas flourished prior to European contact. â¢ A road system helped unify the Inca Empire. A road system similarly helped to unify the Roman Empire.