Aztec Empire

Politics and institutions

The Aztec Empire was the Triple Alliance of Tenochtitlan, Texcoco and Tlacopan, formed in 1428 when the Mexica of Tenochtitlan threw off the Tepanec overlordship of Azcapotzalco. Itzcoatl and his nephew Tlacaelel built the system: Tenochtitlan led, Texcoco supplied law and learning, Tlacopan took a junior share, and conquered city-states kept their kings, lands and gods in exchange for tribute. Moctezuma I pushed the empire across the Valley of Mexico and beyond; Ahuitzotl reached both oceans; Moctezuma II, elected in 1502, ruled a hegemony of hundreds of towns. It was rule by tribute and fear rather than occupation — no Aztec governor sat in a conquered capital — and when the machine faltered, the empire's subjects had no reason to save it.

Economy and finance

The empire ran on maize, cotton and tribute. Conquered towns sent grain, cloth, warrior costumes, cacao, feathers, rubber and food to Tenochtitlan's storehouses, in quotas fixed by town and season. The Valley of Mexico fed itself intensively: chinampas — raised garden beds in the lake — grew several crops a year, causeways moved goods to the island capital, and the Chapultepec aqueducts watered it. Tlatelolco's market, where tens of thousands traded daily under judge-officials, was the largest in the Americas; cacao beans and cotton cloaks served as money. Pochteca long-distance merchants traded deep into Maya country and spied for the state. War, tribute and market formed one system: conquest opened trade routes, and trade paid for conquest.

Society and culture

Aztec society was ordered by calpulli neighborhoods, noble houses and a demanding school system: the calmecac trained nobles and priests, the telpochcalli trained commoner youths in war and craft. Tlacaelel's ideology recast the Mexica as the people of Huitzilopochtli, the sun's champions, whose wars captured sacrificial victims to keep the sun rising — the theological engine of the flower wars and of the Great Temple's dedication feasts, which appalled even allied kings. Nahuatl, spoken across the empire, became the lingua franca; scribes painted books — tribute rolls, dynastic annals, day-count almanacs — that Spanish friars later copied or burned. Beneath the state, ordinary life ran on the chinampa, the market and the calendar: the 260-day count and the solar year met every fifty-two years in the New Fire ceremony.

Military and frontiers

Aztec war was ritual and economics at once. The Jaguar and Eagle knight orders captured enemies alive for sacrifice; the flower wars of the fifteenth century kept training and victims flowing even in truce. Campaigns were logistical feats — porters carried provisions, besieged towns were cut off from their supplies — and the empire's armies, tens of thousands strong, marched behind banners and drums. The system worked against Mesoamerican enemies, but obsidian blades and cotton armor met steel, horses and smallpox in 1519–21: Cortés's few hundred Spaniards, allied with Tlaxcala and tens of thousands of native warriors, besieged Tenochtitlan through the epidemic of 1520, and the city fell on 13 August 1521, destroyed street by street.

Foreign relations

The Triple Alliance's diplomacy was tribute diplomacy. It built coalitions with Texcoco and Tlacopan, divided its enemies, and left unconquered enclaves like Tlaxcala surrounded and raided for captives. Envoys demanded obedience and tribute from cities as far as Soconusco on the Pacific; marriage alliances bound client kings; embassies carried gifts and threats to the Maya edge of the world. Moctezuma II watched strangers land on the Gulf coast in 1519, tried diplomacy — gifts, then welcome, then captivity — and died in the fighting of 1520. His successors defended the capital against a siege led by Cortés and repeatedly reinforced by sea, but the empire's own tributaries, Texcoco among them, joined the siege that ended it.

Legacy and influence

The Aztec Empire lasted less than a century as a hegemony, but its aftermath built modern Mexico. New Spain rose on Tenochtitlan's ruins, draining the lake and laying Mexico City's streets over the causeways; the Great Temple's stones surfaced again beneath the cathedral in the 1970s. Nahuatl is still spoken by more than a million people; chinampa farming survives at Xochimilco; the calendar stone and the tribute books are national emblems, and chocolate crossed the Atlantic from these markets to remake the world's diet. Historians see in the empire both a Mesoamerican achievement — an administrative, hydraulic and intellectual order built without metal tools or draft animals — and a system whose brutality handed its enemies a ready coalition in 1519.