The fall of Tenochtitlan, the capital of the Aztec Empire, was an important event in the Spanish conquest of the empire. It occurred in 1521 following extensive manipulation of local factions and exploitation of pre-existing political divisions by Spanish conquistador Hernán Cortés. He was aided by La Malinche, his interpreter and companion, and by other indigenous allies.
Although numerous battles were fought between the Aztec Empire and the Spanish-led coalition, which was composed mainly of Tlaxcaltec men, it was the siege of Tenochtitlan that directly led to the fall of the Aztec civilization and the ensuing sacking and violence against the survivors. The indigenous population at the time was devastated due to a smallpox epidemic, which killed much of its leadership. Because smallpox had been endemic in Spain for centuries, the Spanish had developed an acquired immunity and were affected relatively little in the epidemic.
The conquest of the Aztec Empire was a critical stage in the Spanish colonization of the Americas. With this conquest, the Spanish Empire used Tenochtitlan's substantial access to the Pacific Ocean to reach Asian markets.
Spanish conquest of the Aztec Empire
In April 1519, Hernán Cortés, a nobleman recently landed in present-day Cuba, and the leader of the third Spanish expedition to the coast of what is known as Mexico, landed at San Juan de Ulúa, a high-quality harbour on Mexico's east coast, with 508 soldiers, 100 sailors, and 14 small cannons. (Survivors of the previous two expeditions directed him to this harbour.) Diego Velázquez de Cuéllar, the Governor of Cuba, called for Cortés to lead an expedition into Mexico after favourable reports from two previous expeditions to Yucatán caught the interest of the Spanish in Cuba. Under pressure by his relatives, who had a different leader in mind, Velázquez revoked Cortés's mandate to lead the expedition before the man left Cuba. Thus Cortés had to struggle to persist as expedition leader while still in Cuba; twice messengers from Velázquez arrived to depose him, and twice they were dissuaded from executing their mission.