Task: Text Categorization
Input (English): This state was initially formed from an alliance between three cities, and was granted permission to settle there by Cocoxtil. The Confederacy of Tlaxcala was an enemy of this empire, which reached its height during the reign of Ahuitzotl. Luis de Medina was initially sent to lead an expedition to conquer this empire, which initially repelled Spanish troops during La Noche Triste. Unable to defeat the Spanish-Tlaxcala alliance, it fell shortly after the death of Montezuma II. For 10 points, name this empire of central Mexico with capital Tenochtitlan which was conquered by Hernando Cortes.
Output (English): History