Hernán Cortés was a Spanish conquistador who is best known for his expeditions that led to the fall of the Aztec Empire in Mexico. He was born around 1485 in Medellín, Spain. By 1511, he had joined a Spanish expedition to Cuba. In 1518, he was chosen to lead an expedition to Mexico. Once there, he made alliances with some of the indigenous people, but clashed with others.
Significantly, Cortés seized the Aztec Emperor Montezuma II as a hostage in 1519, effectively taking control of his empire. His actions led to the destruction and eventual fall of the Aztec empire, and by 1521, he had claimed much of Mexico for Spain. He introduced new livestock, crops, and farming methods to the region, but his treatment of indigenous peoples is widely criticized today. He died in Spain in 1547.
Hernán Cortés overthrew the Aztec Empire through a combination of strategy, alliance-building, and exploitation of local dissatisfaction with Aztec rule.
In 1519, Cortés arrived in Mexico with just about 500 men and 16 horses. He began his campaign by making alliances with local tribes that were enemies of the Aztecs. One of the most significant alliances was with the Tlaxcalan people, who became a key ally in the fight against the Aztecs.
With these allies, Cortés led his forces to the Aztec capital of Tenochtitlan, where Moctezuma II, the Aztec emperor, initially welcomed them peacefully, believing Cortés to be a representative of the god Quetzalcoatl. This was because Cortés' arrival coincided with an Aztec prophecy about a white-skinned god coming from the east.
However, the relationship between the Spanish and Aztecs quickly became hostile. Cortés took Moctezuma hostage, seeking to control the empire through the emperor. This approach was temporarily successful, but tensions rose, leading, in part, to the La Noche Triste (Sad Night) of June 1520 when many Spaniards were killed during their escape from the city.
Following this, Cortés regrouped, reinforced his ranks with additional allied indigenous forces, and laid siege to Tenochtitlan in 1521. He cut off supplies and breached the city's defenses. Over several months, famine, disease (particularly smallpox, which was inadvertently introduced by the Europeans), and combat took a heavy toll on the Aztec people, and the capturing of the new Emperor Cuauhtémoc marked the downfall of the Aztec Empire.
By August 1521, with Tenochtitlan nearly decimated, Cortés effectively solidified Spanish dominance over Mexico, leading to the era of New Spain under Spanish control.