which mexican civilization studied the stars, developed a calendar and had a system of writing
Mayan Civilization â¢ AD 300-AD 900 â¢ Built great cities-Copan, Tikal-they were religious centers â¢ Farming-maize=corn along with beans, squash â¢ Studied planets and stars-designed calendar â¢ developed number system and writing system called hieroglyphics-left cities around 900 AD