Encomienda: The Spanish System That Turned 8 Million Peruvians Into Property — How It Worked and Why It Lasted 300 Years

When Francisco Pizarro divided the spoils of conquest among his 168 soldiers, the settlement included not just gold and silver but people. Eight million of them. The legal mechanism Spain used to distribute this human wealth was called the encomienda — a word that implied responsibility and care but produced something closer to the most lethal forced-labor system the Americas ever generated. In the Potosi silver mines alone, the Indian working population fell from eleven thousand to sixteen hundred in a single century. The people who had given Europe the potato, quinine, cassava, and cotton were being worked to death beneath their own mountains to fund a Spanish empire on the other side of the world.

By BookOfWorldHistory·June 8, 2026·History·10 min read · 1,978 words

Originally published at: https://www.bookofworldhistory.com/blog/encomienda-system-peru-spanish-colonial-slavery-how-it-worked-8-million-peruvians

History

Encomienda: The Spanish System That Turned 8 Million Peruvians Into Property — How It Worked and Why It Lasted 300 Years

BookOfWorldHistory June 8, 2026 10 min · 1,978 words

When Francisco Pizarro divided the spoils of conquest among his 168 soldiers, the settlement included not just gold and silver but people. Eight million of them. The legal mechanism Spain used to distribute this human wealth was called the encomienda — a word that implied responsibility and care but produced something closer to the most lethal forced-labor system the Americas ever generated. In the Potosi silver mines alone, the Indian working population fell from eleven thousand to sixteen hundred in a single century. The people who had given Europe the potato, quinine, cassava, and cotton were being worked to death beneath their own mountains to fund a Spanish empire on the other side of the world.

The conquest of Peru was not primarily a military event. It was a legal one. The military part — Pizarro's 168 soldiers, the trap at Caxamarca, the march to Cuzco, the installation of puppet Incas and their subsequent removal — took a few years. The legal structures that followed, which determined how eight million Peruvians would actually live under Spanish authority, took three centuries to fully develop and never produced anything resembling justice for the people they governed. At the center of those legal structures was the encomienda. The word comes from the Spanish encomendar — to entrust, to commend to someone's care. The system it named was a grant of authority over a specific number of Indians, given by the Spanish crown to a deserving subject, theoretically in exchange for the obligation to provide those Indians with religious instruction, physical protection, and the other benefits of Christian civilization. In practice, the encomienda was a franchise on human beings, fully heritable, tradeable with the land it was attached to, and exercised at whatever level of brutality the local official culture permitted. Understanding the encomienda means understanding something about how the Spanish colonial mind worked. The crown genuinely believed, or at least consistently asserted, that it had a proprietary right over the peoples of the lands it had conquered — derived partly from papal authority that had granted Spain dominion over newly discovered territories, and partly from the theology of just war that held that defeated peoples could legitimately be placed in subjection. What made the encomienda particularly destructive in practice was the gap between what it officially required and what it actually produced, and the systematic unwillingness of every level of the colonial administration to bridge that gap at the expense of the Spaniards who benefited from the system.

Peruvian Indians under the Spanish encomienda system, forced into labor on farms and in mines under colonial rule.

Where It Came From: Columbus and the First Encomiendas

The encomienda was not invented for Peru. It came from the Caribbean, where Columbus had developed it while governing the islands Spain first colonized in the 1490s. In its original Caribbean form it was already a system of coerced labor — particular Indian caciques and their communities were required to cultivate the lands of Spanish colonists. The Spanish colonist got labor; the Indian community got whatever the colonist chose to provide in the way of religious instruction and protection. As the system spread from the Caribbean to Mexico and then to Peru, it evolved in ways that made it consistently more extractive. The legal connection between the encomienda and a specific piece of land was severed — an encomienda of Indians could be granted wholly independently of any territorial grant. This meant that a Spaniard could hold rights over the labor of a community without having any land obligation to those people, without providing them with anything in return for their labor except the theoretical benefit of Christian conversion. The kings of Spain, perpetually short of rewards for their soldiers and courtiers, gave encomiendas freely. Some recipients farmed them out to other Spaniards entirely, becoming absentee proprietors of rights over people they never met. By the time the system arrived in Peru, built into the original partnership agreement between Pizarro, Almagro, and their priest-financier Luque as part of the expected division of spoils, it had evolved from conditional authority into something close to chattel slavery. The repartimiento — the specific assignment of Indians to a given Spaniard — was treated as property. It could be sold with an estate. It could be inherited. The Indians who were the subject of the repartimiento had no say in any of this, no legal standing to contest how they were used, and no reliable authority to appeal to when the system's violence exceeded even its own brutal norms.

The Potosi Mines and the Mathematics of Death

The worst single expression of the encomienda system in Peru was the labor regime in the silver mines of Potosi. The mountain of silver at Potosi — discovered in 1545, in what is now southern Bolivia — was one of the richest mineral deposits ever found, and the Spanish empire organized its finances around the revenue it produced. From the mid-sixteenth century through the seventeenth and into the eighteenth, Potosi silver was the primary currency of the global trade system. The mountain made Spain rich. What it cost the people who worked it was documented in enough detail to constitute one of the most damning indictments of colonial labor practice in the historical record. The labor system at Potosi operated through the mita — a rotational labor draft borrowed from an Inca institution but applied with none of the Inca system's reciprocal obligations. Under the Inca mita, communities contributed labor to public projects in rotation, with the state providing food, tools, and care during the work period. Under the colonial mita, one-seventh of the Indian adult males in the designated recruitment region were required to present themselves at Potosi each year for work assignments. The colonial state provided neither food nor tools — workers were expected to support themselves or be supported by their families, who often had to travel with them. The conditions inside the mountain were lethal by any measure. The altitude of Potosi is around 13,000 feet above sea level — barely enough oxygen for hard physical labor even for acclimatized workers. The mine shafts were dark, unstable, filled with toxic mercury fumes from the amalgamation process used to extract silver from ore, and operating on schedules that left workers underground for days at a stretch. The cold at the surface was extreme. The nutrition available to workers was minimal. At the beginning of the colonial period, eleven thousand Indians worked in the Potosi mines. A century later, sixteen hundred remained. In non-mining districts the Indian population fell to roughly one-tenth of pre-conquest levels. In the coastal valleys where the climate was warmest and where populations had been most dense, the Indians practically died out entirely. By the time the colonial system had run for a century, the agricultural labor of the warm valleys was being performed by African slaves imported across the Atlantic — the indigenous population had been eliminated.

The silver mountain of Potosi where Peruvian Indians were forced to work under the colonial mita labor system.

The Man Who Fought the System From Inside It

Bartolomeo de las Casas was unusual among the Spanish clergy in the Americas in that he actually looked at what the encomienda system was producing and refused to rationalize it. He had come to the Indies early, had held an estate with Indian laborers himself, and had gone through whatever internal process led him to liberate those laborers in obedience to a conviction that what was being done to them was simply wrong. He then spent the rest of his very long life — he died in 1566 at around ninety-two years old — making that conviction as loud and documented and politically inconvenient as one determined priest could manage. His book, The Destruction of the Indians, was exactly what its title promised: a systematic account of what the encomienda system was doing to the indigenous populations of Spanish America, written in terms that could not be dismissed as ignorant or sentimental because Las Casas had seen it directly and documented it specifically. He followed it with a treatise titled Twenty Reasons Why Indians Should Not Be Given to Spaniards in Encomienda — a work that was essentially a legal brief against the entire system, arguing from both natural law and theological principle that the Indians were full human beings with rights that the Spanish crown was obligated to respect. His writing, preaching, and personal lobbying at the Spanish court were the primary force behind the New Laws of 1542 — the most ambitious attempt to reform the colonial labor system in the first century of Spanish rule. The New Laws declared in straightforward language that the personal services of the Indians must cease, that encomiendas could not be inherited or sold, that existing encomiendas should terminate at the death of their current holder, and that no new encomiendas should be granted. If enforced, the New Laws would have dismantled the economic basis of Spanish colonial society in America within a generation.

Why the New Laws Failed — and What Replaced Them

The Spanish colonists in Peru responded to the New Laws by killing the governor who was sent to enforce them. Blasco Nunez Vela, appointed viceroy specifically to implement the new legislation, was defeated in battle near Quito in January 1546 by an armed rebellion of Spanish settlers led by Gonzalo Pizarro — Francisco's brother. Nunez was killed in the fighting. His replacement, Pedro de la Gasca, had been quietly authorized to suspend the most controversial provisions before he even left Spain, and he used that authority immediately. He promised to recommend their repeal in exchange for cooperation, kept the order secret until he could hand off governance, and let his successors worry about the fallout. A royal decree in October 1545 formally revoked the inheritance provisions — the section of the New Laws most threatening to the Spanish colonial economy. The Spanish settlers received this news with celebrations. The enslaved Indians received it with despair that the sources record matter-of-factly. What replaced the New Laws was the Libro de Tasas — the Book of Rules issued by the Viceroy Don Francisco de Toledo, who arrived in Peru in 1569 and spent years constructing the legal framework that would govern the colony for the following two centuries. Toledo's system was explicitly modeled in part on the Incariate's unwritten practices, but the resemblance was surface-level at best. Under the Libro de Tasas, a tribute or poll tax was exacted from every male Indian between eighteen and fifty. One-seventh of the Indians were required to work for their assigned Spaniards. Those near mines were required to furnish mine labor under the mita. The corregidor — the district magistrate — was given substantially absolute authority over Indians in his district. In practice the law was applied more brutally than it was written. Kidnapping was reduced to a system. Hundreds of Peruvians were hunted down and carried off to farms, factories, or mines. Entire male adult populations of villages were taken to the mines, leaving only women and children to cultivate the fields. A decree issued in 1584 required that mine workers be given regular rest periods and time to breathe surface air — the necessity of legislating these provisions tells you what conditions were like without them.

The Ironic Gift: Quinine and the Countess of Chinchon

Among the darkest ironies embedded in the history of the Peruvians under Spanish rule is the story of quinine. The Peruvians had been using the bark of a tree that grew in their highlands — the cinchona tree — as a treatment for fevers for generations before the Spanish arrived. The knowledge was entirely theirs. In the seventeenth century, the wife of one of the Spanish viceroys — the Countess of Chinchon — developed a stubborn attack of malarial fever. The physicians of Lima, trained in European medicine, could do nothing for her. A Jesuit missionary, who had received some fragments of bark from an Indian, passed them to the rector of the Jesuit College. The vice-queen was treated in the Indian manner. The fever broke. She recovered. The treatment spread through European medical practice as Peruvian bark, or Jesuit's bark, and eventually as quinine — the most effective antimalarial drug the world had until the twentieth century. The Swedish botanist Linnaeus later named the tree after the Viceroy: chinchona. The knowledge that saved millions of lives across the malarial regions of the world was Peruvian indigenous knowledge that the people who possessed it were not allowed to benefit from, in a country where the colonial system was simultaneously killing their descendants in silver mines for the profit of the people who had taken everything they had. They gave the world the potato. They gave it quinine. They gave it cassava, cotton domestication techniques, and freeze-drying food preservation. They got the encomienda in return. The ledger of what the conquest of Peru extracted and what it gave back is not a complicated one to read.