page_title: Spanish conquest of the Aztec Empire
section_title: Siege and fall of Tenochtitlan
hierarchical_section_title: Spanish conquest of the Aztec Empire / Spanish expeditions / Cortés's expedition / Siege and fall of Tenochtitlan
caption_attribution_description: Català: Hernan Cortés lluita amb dos indis
context_page_description: The Spanish conquest of the Aztec Empire, also known as the Conquest of Mexico, was one of the primary events in the Spanish colonization of the Americas. There are multiple 16th-century narratives of the events by Spanish conquerors, their indigenous allies, and the defeated Aztecs. It was not solely a contest between a small contingent of Spaniards defeating the Aztec Empire but rather the creation of a coalition of Spanish invaders with tributaries to the Aztecs, and most especially the Aztecs' indigenous enemies and rivals. They combined forces to defeat the Mexica of Tenochtitlan over a two-year period. For the Spanish, the expedition to Mexico was part of a project of Spanish colonization of the New World after twenty-five years of permanent Spanish settlement and further exploration in the Caribbean.
  Following an earlier expedition to Yucatán led by Juan de Grijalva in 1518, Spanish conquistador Hernán Cortés led an expedition to Mexico. Two years later, in 1519, Cortés and his retinue set sail for Mexico.
context_section_description: The Aztecs were struck by a smallpox plague starting in September 1520, which lasted seventy days. Many were killed, including their new leader, the Emperor Cuitlahuac.
  The joint forces of Tlaxcala and Cortés proved to be formidable. One by one they took over most of the cities under Aztec control, some in battle, others by diplomacy. In the end, only Tenochtitlan and the neighboring city of Tlatelolco remained unconquered or not allied with the Spaniards.
  Cortés then approached Tenochtitlan and mounted a siege of the city that involved cutting the causeways from the mainland and controlling the lake with armed brigantines constructed by the Spanish and transported overland to the lake. The Siege of Tenochtitlan lasted eight months. The besiegers cut off the supply of food and destroyed the aqueduct carrying water to the city.
  Despite the stubborn Aztec resistance organized by their new emperor, Cuauhtémoc, the cousin of Moctezuma II, Tenochtitlan and Tlatelolco fell on 13 August 1521, during which the Emperor was captured trying to escape the city in a canoe. The siege of the city and its defense had both been brutal. Largely because he wanted to present the city to his king and emperor, Cortés had made several attempts to end the siege through diplomacy, but all offers were rejected. During the battle, the defenders cut the beating hearts from seventy Spanish prisoners-of-war at the altar to Huitzilopochtli, an act that infuriated the Spaniards.
  Cortés then ordered the idols of the Aztec gods in the temples to be taken down and replaced with icons of Christianity. He also announced that the temple would never again be used for human sacrifice. Human sacrifice and reports of cannibalism, common among the natives of the Aztec Empire, had been a major reason motivating Cortés and encouraging his soldiers to avoid surrender while fighting to the death.
  Tenochtitlan had been almost totally destroyed using the manpower of the Tlaxcalans plus fire and cannon fire during the siege, and once it finally fell, the Spanish continued its destruction, as they soon began to establish the foundations of what would become Mexico City on the site. The surviving Aztec people were forbidden to live in Tenochtitlan and the surrounding isles, and were banished to live in Tlatelolco.
caption: Hernan Cortés fight with two Indians.
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