Latest / The History of Portugal: The Small Nation That Built a Global Empire — Fexingo History / The Portuguese Slave Trade: Empire Built on Human Cargo
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- Lucas: So we've talked a lot about Portugal's Age of Discovery — the caravels, the feitorias, the battles that carved out an empire. But there's a darker side to that story that we haven't really touched on yet, and it's impossible to understand Portugal's global power without it: the slave trade. Luna: I was wondering when we'd get to that. It's such a huge part of the story. Lucas: It really is. And the Portuguese were actually the first Europeans to engage in the transatlantic slave trade on a large scale. It started almost by accident, during those early voyages down the African coast. In 1441, a captain named Antão Gonçalves brought back a few captive Africans from the Rio do Ouro region. But the real trigger came in 1444, when a ship captain called Lançarote de Freitas — he was a tax collector, actually, not a noble — arrived in Lagos with over 200 enslaved Africans. Luna: Wait, a tax collector? How did he end up in the slave trade? Lucas: Good question. Lançarote was the tax collector for Prince Henry the Navigator in Lagos. And Henry basically gave him a monopoly to trade along the African coast. So Lançarote organized an expedition of six caravels, and they captured around 235 people, mostly from the area around Cap Vert. They were brought back to Lagos, and there was this notorious public sale in the town square. Henry himself was there, and he took his royal fifth — the quinto — of the captives. It was the beginning of a massive enterprise. Luna: So this wasn't just something that happened on the side — it was state-sponsored from the beginning. Lucas: Absolutely. Henry the Navigator saw the slave trade as a legitimate source of revenue for his explorations. And it quickly became the most profitable part of Portugal's African ventures. By the mid-15th century, the Portuguese were building feitorias along the coast — like the one at Mina, which we've mentioned before — and they were trading not just gold but also slaves. But the real transformation came when they started using enslaved labor on the islands. Luna: You mean Madeira and the Azores? Lucas: Those too, but especially São Tomé and Príncipe, in the Gulf of Guinea. The Portuguese settled São Tomé in the 1490s, and they introduced sugar cane. Sugar was incredibly labor-intensive — you need to plant, harvest, and process it quickly. So they brought in enslaved Africans to work the plantations. And that model — the sugar plantation worked by enslaved labor — would become the template for the entire Atlantic economy. Luna: So the whole system starts in a tiny island off Africa. Lucas: Exactly. São Tomé was the prototype. By the 1520s, it was the world's largest producer of sugar, and its population was overwhelmingly enslaved. And then when the Portuguese established themselves in Brazil, starting in 1500 but really taking off after the 1530s, they brought that same model with them. The first sugarcane mills in Brazil were built in the 1530s, and they needed workers. Luna: And that's when the transatlantic slave trade really exploded. Lucas: Yes. The Portuguese began shipping enslaved Africans directly to Brazil in huge numbers. The main departure points were Luanda in Angola, which they founded in 1575, and later Benguela. And the main arrival ports were Salvador da Bahia and Rio de Janeiro. Over the next three centuries, Portugal transported roughly 5.8 million enslaved Africans across the Atlantic — that's more than any other European power. Luna: Five point eight million. That's staggering. Lucas: It is. And the conditions on those ships were horrific. The slaves were packed into the holds, often chained, with barely enough room to lie down. Disease spread like wildfire. The mortality rate on the Middle Passage could be as high as 15 to 20 percent. There's a famous wreck from 1670 — the São João Bautista, a Portuguese slave ship that sank off the coast of Brazil. It's one of the earliest known slave shipwrecks, and archaeologists have found shackles and bones at the site. Luna: So there's physical evidence of that horror. Lucas: Yes. And the trade wasn't just a private business — the Portuguese crown regulated it heavily. The Casa da Índia, which we talked about in earlier episodes, controlled the monopolies. Later, the crown awarded contracts — the Contrato de Escravos — to individual merchants or companies, giving them the exclusive right to supply slaves to a particular region. The crown took its cut, of course — taxes like the almojarifazgo. Luna: So the state was deeply complicit. Lucas: Deeply. And the church was too, at least initially. Many Jesuits owned slaves on their plantations. But there were also voices of dissent. One of the most important was a Jesuit named Padre António Vieira, who preached against the enslavement of indigenous peoples in Brazil in the 17th century. He argued that they had souls and should be converted, not enslaved. But he was less vocal about African slavery — he saw it as a tragic but necessary evil for the economy. Luna: So even the critics were compromised. Lucas: To a large extent. And the enslaved Africans didn't accept their fate passively. There were constant revolts, both on ships and on plantations. Many escaped into the interior and formed independent settlements called quilombos. The most famous was Palmares, in the interior of what's now Alagoas state in Brazil. At its peak in the 17th century, Palmares had a population of maybe 20,000 people, and it lasted for almost a hundred years. Luna: Palmares — I've heard that name. It was a kind of African kingdom in Brazil, right? Lucas: Exactly. It was a confederation of settlements, with a complex social structure. The most famous leader was Zumbi, who became a symbol of resistance. He was captured and killed in 1695 by a Portuguese bandeirante expedition. But the legacy of Palmares is huge in Brazil today — Zumbi is a national hero, and November 20th, the day of his death, is celebrated as Black Consciousness Day in Brazil. Luna: So resistance was a constant part of the story. Lucas: Absolutely. And the abolition movement in Portugal and Brazil was slow and painful. The first major step came from the British, who pressured Portugal to end the slave trade after the Napoleonic Wars. Portugal signed a treaty in 1815 agreeing to abolish the trade north of the equator, but it continued illegally for decades. Brazil finally ended the slave trade in 1850, under British pressure, but slavery itself continued. Luna: So when did slavery end in Brazil? Lucas: It ended in 1888 with the Lei Áurea — the Golden Law. It was signed by Princess Isabel, who was acting as regent for her father, Emperor Pedro II. Brazil was the last country in the Western Hemisphere to abolish slavery. And the abolitionist movement had been building for decades, led by figures like Joaquim Nabuco, a politician and writer who argued that slavery was a stain on the nation's soul. Luna: So the story of Portugal's empire is also the story of this massive, brutal human trafficking system. Lucas: It's inseparable from it. The wealth that built the palaces in Lisbon, the gold that gilded the churches — a lot of it came from the labor of enslaved Africans. And the legacy is still with us today. In Brazil, more than half the population is of African descent, and the inequalities that were built during the slave era persist. So when we talk about the Age of Discovery, we also have to talk about the Age of Enslavement. Luna: It's a necessary part of the story. Thanks for covering it. Lucas: You're welcome. It's not an easy topic, but it's one we can't ignore if we want to understand Portugal — and the world it helped create.