The Inca Empire (1438-1533)
The Inca state — Tawantinsuyu, the Realm of the Four Parts — grew in under a century from the Cusco valley into the largest empire in pre-Columbian Americas, stretching from Colombia to central Chile, before civil war and Spanish conquest destroyed it. This is the story of its rise, its roads, storehouses, and administration without writing or the wheel, and its fall. Complements the separate story of the Spanish conquest itself.
Events
Pachacuti Creates Tawantinsuyu
When the Chanca people attacked Cusco around 1438, the Inca nobility considered abandoning the city; the prince Cusi Yupanqui organized its defense, defeated the Chancas, deposed his father, and took the throne as Pachacuti ("Earth-shaker"). The victory began Inca imperial expansion and the reorganization of the kingdom into the Tawantinsuyu, the Realm of the Four Parts (Chinchaysuyu, Antisuyu, Collasuyu, Contisuyu). Pachacuti is regarded as the empire's founder.
Location: Cusco, Peru
Machu Picchu Is Built
Around 1450, Pachacuti ordered construction of Machu Picchu, a royal estate at 2,430 metres (7,970 feet) above sea level above the Urubamba gorge, with polished-stone structures, terraces, and a still-debated ceremonial purpose. The site exemplifies Inca state architecture and engineering — without iron tools, draft animals, or the wheel. Abandoned around the time of the conquest, it survived unknown to the Spanish and became an UNESCO World Heritage Site in 1983.
Location: Machu Picchu, Peru
The Conquest of Chimor
During the reign of Topa Inca Yupanqui (1471-1493), Inca armies conquered Chimor, the powerful Chimú kingdom of the north coast with its capital at Chan Chan, the largest adobe city in the Americas. The conquest of the coast's skilled artisans and wealth moved artisans to Cusco and incorporated the most advanced craftsmen of the Andes into the imperial system. The empire now controlled the Andes from Ecuador to Lake Titicaca and beyond.
Location: North coast of Peru
Topa Inca Extends the Empire South and North
By the end of Topa Inca's reign in 1493, Inca rule ran from southern Colombia into central Chile and into northwest Argentina, roughly 4,000 kilometres (2,500 miles) north to south, knit together by some 40,000 kilometres (25,000 miles) of roads, storehouses (qullqas), relay runners (chaskis), and colonists (mitmaq) resettled to secure new provinces. The state's census, taxation (labor draft, or mit'a), and administration ran without writing, using knotted cord records (quipu). His son Huayna Capac (1493-1525) completed the conquests, pushing into Ecuador, where he spent much of his reign.
Location: Andes, South America
Smallpox Reaches the Andes
European diseases, moving overland through indigenous trade networks ahead of the Spanish themselves, reached the Inca Empire in the mid-1520s, killing Emperor Huayna Capac and his designated heir around 1525-1527 — the first recorded imperial succession crisis of the epidemic era. With no clear successor, the empire passed to a contested succession that would tear it apart. The epidemic, arriving before any European had entered the empire, killed an unknown but substantial share of the population, including many leaders.
The Inca Civil War
After years of rivalry, open war broke out around 1529 between Huayna Capac's sons: Huascar, the Cusco-based emperor, and Atahualpa, who commanded the veteran northern army in Ecuador. Atahualpa's generals won a series of brutal battles, captured Huascar in 1532, and were advancing on Cusco with their massacres of Huascar's faction when news of a Spanish landing reached the highlands. The war left the empire militarily exhausted and politically shattered just as Pizarro arrived.
Location: Ecuador and Peru
Cajamarca — Atahualpa Is Captured
Francisco Pizarro's expedition of roughly 168 men ambushed Atahualpa and his retinue in the plaza of Cajamarca, killing thousands of unarmed attendants and seizing the emperor himself. Atahualpa, from captivity, offered the famous ransom: a room filled once with gold and twice with silver, which the Inca delivered over the following months from temples and palaces across the empire. The capture of a single divine king paralyzed the imperial command structure.
Location: Cajamarca, Peru
Atahualpa Executed, Cusco Falls
Despite delivering the ransom, Atahualpa was executed by garrote on 26 July 1533 after a Spanish show trial, accused of ordering Huascar's murder and conspiring against the Spanish. Pizarro's force, reinforced and allied with previously conquered peoples who resented Inca rule, marched south and entered Cusco on 15 November 1533, looting its temples. The Spanish installed the young Manco Inca as a puppet emperor.
Location: Cusco, Peru
Manco Inca's Rebellion and Siege of Cusco
The puppet emperor Manco Inca escaped Cusco and raised a massive rebellion in 1536, besieging the Spanish in Cusco with an army estimated in the tens of thousands and reportedly coming close to overwhelming them. After the siege failed at Cusco and Ollantaytambo, Manco withdrew to the remote Vilcabamba valley, founding an independent Neo-Inca state in exile. The Andes now entered decades of war, epidemic, and forced labor that collapsed the population.
Location: Cusco and Ollantaytambo, Peru
The Fall of the Neo-Inca State
After a Spanish expedition under Viceroy Toledo's orders invaded the Vilcabamba state and captured its last ruler, the final Inca emperor Tupac Amaru was executed in Cusco's plaza on 24 September 1572 before a crowd that reportedly gathered to witness the end of the dynasty. With the 40-year Neo-Inca resistance ended, the Spanish consolidated rule over the former empire's territory, its population decimated by war, forced labor (mita in the Potosí mines), and successive epidemics. Quechua language, community structure, and Andean identity nonetheless survived colonial rule and remain central to the region today.
Location: Vilcabamba, Peru