Respuesta :

LeapOfFaith
The Incan, Mayan, Aztec, and Olmec civilizations flourished in South America, and the Cherokee, Mississippian, Chickasaw, Apache, and other native american tribes flourished in North America.
FabyVerde

Answer:

Before the arrival of Europeans, to be specific Christopher Columbus, there were several civilizations which had developed their own calendars, mathematics, irrigation system, star observation, religion, etc, to mention a few: Mayan, Zapotec, Olmec, Toltec, Teotihuacan, Aztec, Incan, Apache, Cherokee, etc.