What are the differences between the Incas, Mayas, and Aztecs.?

Well the Incas centered their empire around the highlands of Peru and Ecuador. The Aztecs around what is currently Mexico City. The Mayas the eastern lowlands of Guatamala and Mexico. We know what happened to the Aztecs and the Incas. They were conquered by the Spanish. We do not exactly know the fate of the Mayas.