The document summarizes aspects of Maya civilization during the Classic Era from 250-900 AD. It describes their advanced agricultural practices including irrigation canals and raised fields. It notes that the largest Maya city, Tikal, had a population of around 50,000 people and covered 14 square miles. It also discusses key aspects of Maya culture like their numerical system, calendars, and hierarchical society as depicted in murals. The document concludes by briefly mentioning other Mesoamerican civilizations like the Zapotec.