The document provides information about three ancient civilizations - the Maya, Aztec, and Inca. It describes the locations and key features of each, including their religious practices, advances in mathematics and architecture, and their eventual declines. The Maya built cities like Chichen Itza in Mexico and Central America and developed hieroglyphic writing and a calendar. The Aztecs established the city of Tenochtitlan in Mexico and had an empire centered around religious practices like human sacrifice. The Inca ruled from Cuzco in the Andes and built elaborate stone structures and roads while practicing rituals like cranial deformation.