The "Classic Period" refers to a significant era in the history of several ancient civilizations, particularly in Mesoamerica and Andean South America. In Mesoamerica, this period, which lasted from approximately 250 to 900 CE, is marked by the rise of powerful city-states, such as Teotihuacan and the Maya civilization. These societies made advancements in writing, mathematics, and astronomy. In the Andean region, the Classic Period is often associated with the Moche and Nazca cultures, known for their impressive pottery and intricate textiles. This era saw the development of complex societies with rich artistic traditions and significant architectural achievements, laying the groundwork for future civilizations like the Inca.