How old is the city of Teotihuacan?

Teotihuacan was a pre-Columbian city located in the Basin of Mexico, approximately 48 km (30 mi) northeast of modern-day Mexico City. The city was founded around 100 BC and flourished until around AD 750. At its peak, Teotihuacan was one of the largest cities in the pre-Columbian Americas, with a population estimated at around 125,000 people. The city was a major religious and cultural center for the region and was renowned for its impressive architecture, including the Pyramid of the Sun, the Pyramid of the Moon, and the Temple of Quetzalcoatl. Teotihuacan's decline began in the 7th century AD, and by the 11th century, the city was abandoned.