The Inca Empire

I. Overview

The Inca Empire (Tawantinsuyu, “Land of the Four Quarters”) was the largest empire ever built in the Americas and the largest in the world in the early 1500s — some 2 million square kilometres from Ecuador to Chile, perhaps 10–12 million people speaking dozens of languages, all ruled from highland Cuzco without wheels, horses, iron or writing as Europe knew it. Instead the Incas used mitʼa rotating labour, knotted-string quipu accounts, hillside terraces, and 40,000 km of stone Qhapaq Ñan roads with relay runners (chasquis) carrying messages 240 km a day (WHE, “Inca Civilization”; Britannica, “Inca”).

The empire was built with astonishing speed. In 1438 Cuzco was a small kingdom besieged by the Chancas; Pachacuti Inca Yupanqui (“Earth-Shaker”) broke the siege, seized the throne, and with his son Topa Inca conquered the Andes in a generation — the Chincha coast, the Chimú north with its city of Chan Chan, the Colla altiplano, and south to Chile. His great-grandson Huayna Capac (1493–1527) pushed the frontier to Ecuador and the Amazon edge. Then smallpox, carried ahead of any Spaniard, killed Huayna Capac and his heir; his sons Atahualpa and Huáscar fought a brutal civil war — and into it walked Francisco Pizarro with 168 men, who seized Atahualpa at Cajamarca on 16 November 1532 and ransomed him for a room of gold before strangling him (WHE).

Resistance lasted forty years in the Vilcabamba mountains under Manco Inca, Sayri Topac, Titu Cusi and finally Túpac Amaru, executed in 1572. But Inca language (Quechua, 8–10 million speakers today), terraces, roads and festivals — Inti Raymi still fills Cuzco each June — endure. Machu Picchu, Pachacutiʼs cloud estate rediscovered by Hiram Bingham in 1911, is the most visited ruin in the Americas.

II. Geography

Four quarters met at Cuzco: Chinchaysuyu (north to Ecuador), Antisuyu (east Amazon), Collasuyu (south altiplano to Chile), Contisuyu (west coast). Coast desert, sierra valleys at 2,500–4,000 m, high puna pastures, Amazon edge — the Incas farmed every level: maize low, potatoes and quinoa high (3,000+ potato varieties), llamas and alpacas for wool and caravans. Freeze-dried chuño and charqui filled thousands of hillside qollqa storehouses against famine.

III. Origins to Pachacuti

Legend says Manco Capac and Mama Ocllo rose from Lake Titicaca or the Pacaritambo cave, carrying a golden staff that sank at Cuzco — “navel of the world.” Eight early kings ruled a small valley chiefdom until the Chanca siege of 1438, when prince Cusi Yupanqui — soon Pachacuti — rallied Cuzco, claimed the stones themselves turned into warriors (pururaucas), and destroyed the Chancas. He rebuilt Cuzco as a puma-shaped capital, raised the Coricancha sun temple sheeted in gold, and launched the expansion his son Topa completed.

IV. Expansion 1438–1527

Pachacuti (1438–71) took the Andes valleys; Topa Inca (1471–93) marched to Ecuador, Bolivia, Chile — even, legend says, sailed to the Pacific islands. He crushed the Chimú of Chan Chan (largest adobe city on earth) and moved its goldsmiths to Cuzco. Huayna Capac (1493–1527) built second capital Quito, fought endless Ecuador wars, and died of smallpox near Quito with his heir — splitting the empire between Atahualpa (Quito) and Huáscar (Cuzco), whose civil war (1529–32) killed perhaps 100,000 just as Pizarro landed.

V. Administration Without Writing

No script — instead quipus: cotton cords with decimal knots recording census, taxes, harvests, armies; quipucamayocs (readers) ran the state. Labour tax mitʼa drafted every household yearly for terraces, roads, mines, armies — fed and clothed by the state from qollqa stores. Conquered lords kept rank if they sent sons to Cuzco, worshipped Inti alongside local gods, and accepted Quechua and resettled colonists (mitimaes). Rebellion meant annihilation — the Cañari were massacred, survivors deported.

VI. Religion, Roads, Cities

Creator Viracocha, Sun Inti (the Sapa Incaʼs father), Moon Mama Quilla, Earth Pachamama still fed with chicha today. The Coricancha (“Golden Enclosure”) held a gold sun disc, life-size gold maize, and mummies of dead kings who “lived on” owning lands. Qhapaq Ñan roads — 40,000 km, tunnels, rope bridges like Qʼeswachaka rewoven yearly — tied 100+ waystations. Cuzco: fortress Sacsayhuamánʼs 100-ton stones; Machu Picchu (Pachacutiʼs estate), Ollantaytambo, Pisac terraces.

VII. Timeline

VIII. Gallery

IX. Watch

X. Great Individuals

XI. Sources

Original prose from scholarly sources.

The earth shakes; the poor tremble — so the Inca comes.— on Pachacuti, “Earth-Shaker”