Tenōchtitlan

Tenochtitlan was a Mexica city-state on an island in Lake Texcoco. Traditionally founded in 1325 under Tenoch, it was a client of Azcapotzalco.

In 1428 Itzcoatl allied with Tetzcoco and Tlacopan to overthrow Azcapotzalco, creating a Triple Alliance soon dominated by Tenochtitlan. Its rulers conquered Tlatelolco in 1473. Cortés entered the capital in 1519; after a long siege it fell in 1521, and the Spaniards built Mexico City on its ruins.