Every country has its founding myths—stories of brave pioneers who ventured into the unknown, pushing back frontiers and carving civilization from wilderness. In the United States, it’s the cowboy and the pioneer. In Australia, it’s the bushman and the explorer. And in Brazil, it’s the bandeirante.
But unlike their North American counterparts, the bandeirantes occupy a far more complex and contested place in national memory. They were slavers and fortune-hunters, responsible for the enslavement and death of hundreds of thousands of Indigenous people. Yet they were also the men who, through sheer audacity and endurance, stretched Portuguese America far beyond the boundaries any European treaty had envisioned, laying the foundations for a country of continental dimensions.
This is the story of those men—who they were, what they did, and how their expeditions shaped the Brazil we know today.
Who Were the Bandeirantes?
The term bandeirante comes from the Portuguese word bandeira (flag), and by extension, a military unit or raiding party . But the men who became known as bandeirantes didn’t call themselves that. They used words like entrada (entry), jornada (journey), or companhia (company) . The term itself only appeared in written records around 1635, and “bandeirante” even later, around 1740 .
These were the men of São Paulo—or Paulistas, as the inhabitants of the São Paulo plateau were known. While coastal Brazil developed around slave-worked sugar plantations, the Paulistas found themselves cut off from the sea by the great mountain range, facing a vast wilderness to the north and west . This geography shaped their destiny. The coastal Portuguese used African slaves; the Paulistas, with less access to the Atlantic slave trade, turned to the Indigenous populations of the interior . Many Paulistas were themselves part-Indigenous—mamelucos of mixed Portuguese and native ancestry—and spoke a mixture of Portuguese and the Língua Geral Paulista, the general language based on Tupi that became the lingua franca of the interior .
As anthropologist Darcy Ribeiro noted, the bandeirantes were racially mixed, with interbreeding between Portuguese men and Indigenous women being common, even among the elite . The families of São Paulo were patrician and polygamous, with Catholic marriage only becoming consolidated later . The largest bandeira, organized by Manuel Preto and Antônio Raposo Tavares in 1629, consisted of just 69 whites, 900 mamelucos, and 2,000 Indigenous allies . Most bandeirantes, in fact, were Indigenous people and poor colonials who found in these expeditions both survival and opportunity .
The Two Phases of the Bandeiras
The bandeirante movement unfolded in two distinct phases, each with its own objectives and legacy.
Phase One: The Slave Hunts (1628-1670)
The first bandeiras were primarily slaving expeditions. Their target: the Jesuit missions of Spanish Guayrá—a vast territory that today lies largely within the Brazilian state of Paraná, but at the time belonged to the Spanish crown.
The Jesuits had established reductions (mission villages) where they gathered Indigenous populations into settled communities, protected them from enslavement, and converted them to Christianity. To the bandeirantes, these missions represented concentrations of prime slave labor, ripe for plunder. And the Jesuits, armed only with faith and limited military resources, were in no position to stop them.
The most famous of the slaving bandeirantes was Antônio Raposo Tavares. In 1628, he led a bandeira of 2,000 allied Indians, 900 mamelucos, and 69 whites that raided 21 Jesuit villages in the upper Paraná Valley, capturing about 2,500 natives . In 1636, he led an even larger expedition that destroyed most of the Jesuit missions of Spanish Guayrá and enslaved over 60,000 Indigenous people .
The tactics were brutal. Bandeirantes would surround villages and set them alight, forcing inhabitants out into the open. They disguised themselves as Jesuits, singing Mass to lure natives out of their settlements . They set native tribes against each other, weakening both sides before enslaving the survivors . Captives were stripped and tied to long poles to prevent escape . Hundreds died of exposure while waiting to be marched to the coast.
Between 1628 and 1670, the bandeiras focused almost exclusively on slave hunting . By the middle of the 18th century, Brazil’s Indigenous population had dropped from an estimated 2.5 million in 1500 to perhaps 1.5 million . Many tribes living near the Atlantic coast had been decimated by disease and enslavement. Others fled into the interior, and their flight created an ever-greater need for slaves—one not entirely satisfied by the African slave trade .
Phase Two: The Gold Hunters (1670-1720s)
By the 1660s, two things had changed. First, the supply of easily captured natives had diminished. Second, the Portuguese crown, desperate to emulate the mineral wealth Spain had found at Potosí, began offering rewards to those who discovered gold and silver in the Brazilian interior .
The bandeirantes shifted focus. Driven by greed and government incentives, they ventured ever deeper into the wilderness, now hunting for precious metals rather than human beings . And in the 1690s, they struck gold.
The discovery came in the mountains of a region that would soon be named Minas Gerais—the General Mines . Bandeirantes found rich alluvial deposits that would trigger the Brazilian Gold Rush, the longest gold rush in world history and the source of the largest gold mines in South America .
The impact was transformative. By 1725, half the population of Brazil was living in the southeast . More than 400,000 Portuguese and 500,000 African slaves poured into the mining region . Vila Rica (now Ouro Preto) became the most populous city in Latin America, with 80,000 inhabitants—more than twice the population of New York at the time, and ten times that of São Paulo .
Subsequent expeditions pushed further west. In 1718-19, bandeirantes found gold on the Cuiabá River, some 1,400 kilometers northwest of São Paulo . The Cuiabá gold rush extended a finger of Portuguese settlement across uncolonized territory all the way to the present Bolivian border . In 1725, they discovered gold in Goiás . By the mid-18th century, the bandeirantes had traversed a vast arc of territory, claiming for Portugal the lands that would become the states of Minas Gerais, Goiás, Mato Grosso, and Mato Grosso do Sul.
The Epic Journeys
The scale of bandeirante expeditions defies modern imagination. Between 1648 and 1652, Antônio Raposo Tavares led one of the longest exploratory journeys in history—from São Paulo to the mouth of the Amazon River, investigating the Rio Negro and other tributaries, ultimately covering more than 10,000 kilometers . The expedition traveled to Andean Quito, deep within the Spanish Viceroyalty of Peru, before descending the Amazon to Belém. Of the 1,200 men who departed São Paulo, only 60 reached their final destination .
The routes to the Cuiabá goldfields were equally punishing. The 3,500-kilometer journey ran 155 kilometers overland from São Paulo to Porto Feliz, then down the Tietê and Paraná rivers, up the Rio Pardo, across a 13-kilometer portage at Camapuã, down the Coxim and Taquari rivers through the Pantanal swamps, and up the Paraguay and Cuiabá rivers—a route that passed through around 100 rapids .
The outbound journey, timed to high water from March to June, took five to seven months. The return journey, loaded with gold, took several months more . The 1726 convoy alone had 305 canoes and over 3,000 people . These expeditions were called “monsoons” (monções)—a Portuguese term for seasonal flooding, but one that captured the epic, almost oceanic scale of these river journeys .
Dangers abounded. Rapids capsized canoes. Mosquitoes carried disease. And Indigenous peoples, pushed beyond endurance, fought back. The Payaguá, a canoe people on the Paraguay River, annihilated a 600-man convoy in 1725, and in 1730 they killed 400 people and captured 60 arrobas (nearly 900 kilograms) of gold . In 1733, a convoy had only four survivors . Only after an 842-man punitive force destroyed a Payaguá town in 1734 did the attacks subside .
The Conflict with the Jesuits
Throughout the bandeirante era, the Jesuits stood as the most consistent opponents of native enslavement. Father Antonio Ruiz de Montoya, a Jesuit leader, attempted to lead 12,000 Guaraní to safety in Argentina to protect them from the bandeirantes . The conflict came to a head when bandeirantes attacked a Jesuit camp, and Father Pedro Romero, leading a force of 4,200 Guaraní, repelled an assault by 3,500 bandeirantes .
But the Jesuits were fighting a losing battle. In 1750, the Treaty of Madrid between Spain and Portugal agreed to dismantle the Jesuit missions of the Misiones Orientales. The Guaraní resisted, triggering the Guaraní War, in which Spanish and Portuguese forces ultimately defeated the indigenous leader Sepé Tiaraju and destroyed the mission camps . In 1759, Portugal expelled the Jesuits entirely, removing the last organized opposition to bandeirante expansion .
The Territorial Legacy
The bandeirantes’ most enduring achievement was territorial. The 1494 Treaty of Tordesillas had divided the South American continent between Portugal and Spain along a meridian 370 leagues west of the Cape Verde islands . By that line, most of what is now Brazil should have belonged to Spain.
The bandeirantes ignored it completely. They ventured far beyond the Tordesillas line, exploring, settling, and claiming lands that Portugal had never officially possessed . By the 18th century, Portuguese control extended over most of what is now the Southeast, South, and Central-West regions of Brazil . When Spain and Portugal finally negotiated the Treaty of Madrid in 1750, they effectively ratified what the bandeirantes had already accomplished on the ground: Brazil would extend far west of Tordesillas, to the watersheds of the Amazon and the Paraguay.
As the 19th-century English historian Robert Southey wrote: “These determined adventurers would spend months and months in the wild hunting slaves and looking for gold and silver, following the information they learnt from the native Americans. And finally, they managed to secure, to themselves and to the House of Braganza, the richest mines, the largest portion of South America, of all inhabited Earth, the most beautiful land” .
The Language They Left Behind
The bandeirantes also left linguistic traces across the vast territory they traversed. The Bandeirante Philology project, led by Professor Heitor Megale of the University of São Paulo, has spent years documenting archaic Portuguese surviving in isolated communities along the bandeirante routes .
The findings are remarkable. In the hinterlands of Minas Gerais, Goiás, and Mato Grosso, researchers found elderly informants using words and pronunciations that had disappeared from urban Brazil centuries ago. Terms like “mamparra” (pretending), “esmolna” (alms, from the 13th-century “eleemosyna”), and “pessuir” (to possess, an 18th-century variant) still punctuate rural speech . Pronunciations like “tchapéu” (hat, from the standard “chapéu”) and “tchuva” (rain, from “chuva”)—typical of 17th-century Portuguese—survive in remote areas . The nasal diphthong [õ] for [ãw], as in “mão” pronounced [mõ], still echoes in the backlands of Mato Grosso .
“The root of Bandeirante Philology lies in the comparison between the data of the period and the speech of the informants,” says researcher Sílvio de Almeida Toledo Neto . The project has uncovered linguistic fossils that trace the bandeirantes’ paths across half a continent, evidence that an ancient layer of language survived in other points of the country as an inheritor of colonial São Paulo .
The Contested Monument
For much of Brazilian history, the bandeirantes were celebrated as national heroes—conquerors of the wilderness, expanders of frontiers, exemplars of bravery and perseverance . Schoolbooks praised their courage. Monuments were erected in their honor, especially in São Paulo.
The most famous of these is the Monumento às Bandeiras, created by Italian-Brazilian sculptor Victor Brecheret and inaugurated in 1953 in São Paulo’s Ibirapuera Park . The monument is massive—50 meters long, 16 meters wide, constructed from 240 granite blocks each weighing 50 tons . It depicts 29 stylized figures nearly 5 meters tall, representing what Brecheret saw as Brazil’s ethnic mixture: Portuguese, Indians, enslaved Africans, and mestiços .
For decades, it stood as a proud symbol of São Paulo’s identity. But in recent years, the monument has become a target of protest. In 2016, it was graffitied with the words “Desternacionalizem a arte” (Denationalize art). In 2021, during protests against Brazil’s Indigenous policies, it was defaced again, this time with fire . The attacks reflect a broader shift in Brazilian consciousness—a recognition that the bandeirantes were not merely brave explorers but also agents of genocide, responsible for the enslavement and death of hundreds of thousands of Indigenous people .
As scholar Maria de Fátima Morethy Couto notes, this represents a “turn in the perception on the subject” . The bandeirantes are no longer seen simply as heroes, but as complex figures whose legacy includes both territorial expansion and immense human suffering.
Conclusion: The Men Who Made Brazil
The bandeirantes were neither saints nor demons—they were men of their time, driven by the brutal logic of colonial extraction. They enslaved and killed on a massive scale, and their legacy is stained by the suffering they caused. Yet they also accomplished something extraordinary: in little more than a century, they traversed a continent, discovered its mineral wealth, and laid the foundations for a country of continental dimensions.
Without the bandeirantes, Brazil today might be a narrow coastal strip, bounded by the Tordesillas line and dwarfed by Spanish-speaking neighbors. Instead, it is the largest country in South America, with borders that stretch from the Atlantic to the Andes, from the Amazon to the Plate. Those borders are the bandeirantes’ most enduring legacy—a monument carved not in granite, but in the very shape of the nation.
The challenge for Brazilians today is to hold both truths together: to acknowledge the violence while recognizing the achievement; to remember the victims while understanding how the victors shaped the land. It is a difficult balance, but a necessary one—because the bandeirantes are not just figures in a distant past. They are the men who made Brazil, for better and for worse.
What are your thoughts on the bandeirantes’ complex legacy? Share your perspective in the comments below.