The "Classic period" refers to a significant era in various cultures, particularly in Mesoamerica, spanning roughly from 250 to 900 CE. This period is marked by the rise of advanced civilizations such as the Maya and Teotihuacan, which developed complex societies, monumental architecture, and sophisticated art. The Classic period is characterized by significant achievements in mathematics, astronomy, and writing. In addition to Mesoamerica, the term "Classic period" can also apply to the Classical antiquity of ancient Greece and Rome, where notable advancements in philosophy, politics, and the arts occurred. This era laid the foundation for many aspects of modern Western culture and thought.