The Spanish Conquest of the Aztec Empire

The short analysis

The fall of Tenochtitlan in 1521 is routinely told as a tale of audacious European adventurers toppling a mighty empire through superior technology and sheer nerve. That framing is misleading in almost every important respect. The force that besieged and ultimately destroyed the Aztec capital was overwhelmingly composed of indigenous warriors, drawn from peoples who had their own reasons to resent Mexica dominance. The Spanish contingent under Hernán Cortés was militarily significant but numerically small; without the tens of thousands of Tlaxcalan, Texcocan, and other Mesoamerican allies, the campaign would almost certainly have collapsed. Epidemic disease, particularly smallpox arriving ahead of or alongside the Spanish advance, devastated the population of Tenochtitlan and killed the Aztec ruler Cuitláhuac within months of taking power, shattering leadership at the worst possible moment. The Aztec Empire itself was not a monolithic state but a tribute-extraction system that had generated widespread resentment among subject peoples across central Mexico. Cortés exploited that resentment brilliantly, though the indigenous allies were pursuing their own political goals, not simply following a Spanish lead. The conquest that followed was therefore a civil war as much as an invasion, and understanding it that way changes how we read everything from its causes to its consequences for the Americas.