Latest / The History of Portugal: The Small Nation That Built a Global Empire — Fexingo History / The Treaty of Tordesillas: How Portugal Divided the World
Transcript
- Lucas: If you've been stepping into history with us episode by episode, you know we’ve spent a lot of time talking about the ships, the spices, and the blood spilled in places like Goa and the Banda Islands. But before any of that global machinery could turn, there was a much simpler, yet far more consequential, piece of paper. Luna: Which is? Lucas: The Treaty of Tordesillas. Signed in 1494, it’s arguably the most important diplomatic document in the history of globalization. It wasn’t signed by kings meeting on a battlefield, but by diplomats haggling over a line drawn on a parchment map. And it basically decided who got what half of the Earth. Luna: Wait, they just divided the whole planet? Lucas: They did. To understand how, we have to go back to 1493, right after Columbus’s first voyage. Pope Alexander VI, a Spanish pope from the Borgia family, issued a series of papal bulls known collectively as the Bula Inter Caetera. He declared that all lands west and south of a line 100 leagues west of the Azores and Cape Verde belonged to Spain. Luna: And Portugal had no say in that? Lucas: Exactly. And Portugal was furious. King John II saw this as an existential threat. His navigators had already explored down the African coast, and if Spain controlled everything west of Africa, Portugal’s route to India was blocked. So John II didn’t accept the Pope’s decision. He started preparing for war. Luna: War over a line on a map? Lucas: Over the entire ocean. John II sent his brother-in-law, Fernando Pacheco, and the diplomat Aleixo Fernandes to Rome to negotiate. They argued that the Pope had no authority to divide lands that weren't even discovered yet, and certainly not without consulting Portugal. It was a bold legal challenge. Luna: Did the Pope back down? Lucas: He didn't back down, but he agreed to renegotiate. The result was the Tratado de Tordesilhas. The line was moved 370 leagues further west. This tiny shift gave Portugal exclusive rights to sail east around Africa to India, but it also accidentally gave them a massive chunk of land in South America. Luna: South America? Like Brazil? Lucas: Yes. When Pedro Álvares Cabral landed in Brazil in 1500, he was technically entering Portuguese territory because the new line cut through the eastern bulge of the continent. If the line had stayed at the original position, Brazil would likely be Spanish-speaking today. Luna: That changes everything linguistically. Lucas: It does. But here’s the thing that always gets me—this treaty assumed the Earth was small. They thought the line would meet somewhere in the Pacific, dividing the globe evenly. They had no idea how huge the Pacific actually was. Luna: So the other side of the line was unknown. Lucas: Completely. And this led to the 'Spice Islands' crisis decades later. When Magellan sailed west and reached the Moluccas, Spain said those were theirs under Tordesillas. Portugal said they were theirs because they were closer to the African side. It caused nearly a decade of armed standoff. Luna: But eventually they fixed it? Lucas: They did, with the Treaty of Zaragoza in 1529, which set an antimeridian on the other side of the world. But let's pause here for a second. Before we dive deeper into how this line held up against the rising powers of Northern Europe, I want to thank our listeners. Luna: Yeah, the funding model is pretty unique for this kind of deep research. Lucas: It is. A handful of listeners chip in monthly through buy me a coffee dot com slash fexingo, and that's literally what funds making this many of these episodes possible. No ads, just good history. Luna: Supporting independent podcasts keeps the quality high. Lucas: Absolutely. Now, back to the treaty. The real failure of Tordesillas wasn't in Europe; it was in ignoring everyone else. England and France refused to recognize the Pope’s authority to divide the world between two Catholic kingdoms. Luna: They just called it illegal? Lucas: They used the concept of Mare Liberum, or Free Seas, though that term came a bit later from Grotius. Essentially, they argued that trade and discovery were open to all nations, regardless of papal decrees. The French king Francis I reportedly asked God to curse the Pope's will, asking to see Adam's will so he could find out where he was left out of the share. Luna: I love that quote. Lucas: It’s legendary. But humor aside, the reality was brutal. When the English and Dutch arrived in the Indies, they didn't care about a treaty signed fifty years prior by kings who couldn't even visit the places they were claiming. The treaty created a false sense of security for Portugal and Spain. Luna: So they stopped worrying about competition? Lucas: Partially. They focused on fortifying their own zones rather than watching the horizon. By the time they realized the Dutch were stealing their spice trade, it was too late. The treaty had isolated them diplomatically, making them enemies of every rising Protestant power. Luna: Did the locals care about the line at all? Lucas: Zero percent. In Brazil, the Tupi people didn't know what a meridian was. In India, the Zamorin of Calicut didn't care about a Spanish papal bull. The line existed only in Lisbon and Madrid. It was a European fiction imposed on a global stage. Luna: It feels very modern, actually. Lucas: It is. It’s the origin of international law, for better or worse. It established that borders could be drawn by agreement between great powers, ignoring the realities on the ground. This mindset persisted for centuries. Luna: Even into the colonial era? Lucas: Deeply. Even when the treaty became irrelevant due to navigation advances, the of dividing spheres of influence remained. You see it in the Scramble for Africa in the 19th century, where European powers drew lines across continents again, largely ignoring tribal and cultural boundaries. Luna: The legacy is still visible today. Lucas: It is. Look at the border between Angola and Namibia, or the languages spoken in the Americas. The ghost of Tordesillas is still walking among us. It’s a reminder that history isn't just about battles; it’s about the paperwork that makes the battles acceptable. Luna: So the treaty was more symbolic than practical eventually? Lucas: Symbolic, yes, but politically potent. It legitimized the Iberian empires for nearly a century. It allowed them to operate with impunity against each other, focusing their aggression outward. That unity, however fragile, was their greatest strength until the Dutch broke it. Luna: And then the empire began to crack. Lucas: Precisely. The treaty didn't cause the fall, but it delayed the realization that they were vulnerable. By the time Portugal accepted that the Dutch were a real threat, they had overextended. The map had given them confidence, but the seas told a different story. Luna: It’s a cautionary tale about drawing lines in sand. Lucas: Or ink. Which is exactly what Tordesillas was. Two lines on a piece of vellum that tried to contain the ocean. And ultimately, the ocean won. The tide turned, the Dutch took over, and the Iberian monopoly crumbled under the weight of its own arrogance. Luna: Thanks for taking us through that. Lucas: Next time, we’ll look at how Portugal adapted when that monopoly finally broke, and how they survived as a minor player in a major game. For now, stay curious.