Atzcapotzalco

Also spelled  Azcapotzalco,   city, northwestern Federal District, central Mexico. Situated approximately 7,350 feet (2,240 m) above sea level in the Valley of Mexico, the city was founded in the 12th century and given the Aztec name meaning “anthill” because of its large population. It became famous for its slave market and the skill of its craftsmen in working precious metals. Hernán Cortés later set up smelters