The Aztec Empire: Rise, Glory, and Fall of the Mexica Civilization

Introduction: the Shadow of the Eagle and Serpent

On a muddy island in the middle of Lake Texcoco in the Valley of Mexico, a group of wandering people known as the Mexica paused their long migration and beheld a sight they had been promised by their patron deity: a great eagle perched atop a prickly pear cactus, devouring a serpent. According to their sacred traditions, this vision marked the spot where they were to build their city. Around 1325 CE, they began construction of what would become Tenochtitlan, the magnificent island capital of one of the most powerful empires the Americas had ever known.

Less than two centuries after that fateful founding, the Aztec Empire — as the Mexica state came to be known — had grown to encompass most of central Mexico, extending from the Gulf of Mexico to the Pacific coast and from the arid north to the humid tropics of present-day Oaxaca and Guerrero. At its height between 1450 and 1519, the empire controlled a territory of approximately 200,000 square kilometers, extracted tribute from over four hundred subject polities, and ruled an estimated five to six million people. Its capital, Tenochtitlan, with a population of between 200,000 and 300,000 inhabitants, was one of the largest cities on earth, rivaling contemporary London, Paris, and Constantinople.

The story of the Aztec Empire encompasses extraordinary achievements: a city of gleaming white temples and floating gardens rising from a shimmering lake; a calendar system of remarkable sophistication; a social order of complex hierarchy and ritual obligation; a tradition of artistic production of great beauty and power; and a cosmological system in which the maintenance of the universe itself required the regular sacrifice of human blood. It also encompasses one of the most dramatic and consequential collisions in world history: the confrontation between the Mexica ruler Moctezuma II and the Spanish conquistador Hernan Cortes in November 1519, which within two years would bring the empire crashing down and transform the entire Western Hemisphere.

This account traces the full arc of Mexica history, from their mythological origins in the legendary homeland of Aztlan, through their emergence as a dominant power in the Valley of Mexico, to the height of imperial expansion under a succession of warrior-kings, and finally to the Spanish conquest and the long, complex aftermath that continues to shape Mexican identity and culture to the present day.

Origins: from Aztlan to the Valley of Mexico

The name "Aztec" is itself somewhat of a misnomer. The people who built Tenochtitlan and created the Triple Alliance empire called themselves the Mexica, and their city gave its name to the country of Mexico. The word "Aztec" derives from "Aztlan," the mythological homeland from which the Mexica claimed to have migrated, and was popularized by European scholars in the nineteenth century as a collective designation for the Mexica and related Nahuatl-speaking peoples. Contemporary scholars increasingly prefer "Mexica" for the specific people of Tenochtitlan, reserving "Aztec" for broader cultural contexts.