Latest / The History of Portugal: The Small Nation That Built a Global Empire — Fexingo History / The Treaty of Tordesillas: Dividing the World
Transcript
- Lucas: Imagine a world map where half the globe belongs to one family, and the other half to another, separated not by mountains or rivers, but by a straight line drawn in ink. Luna: That sounds like something out of a fantasy novel, not real history. Lucas: It was real enough to cause nearly two decades of diplomatic tension between Portugal and Spain, culminating in the Treaty of Tordesillas in 1494. Luna: So they actually sat down to negotiate who got what? Lucas: They did, but first you have to understand the chaos that preceded it. In 1492, Columbus sailed west and hit land, which immediately triggered a crisis because Portugal claimed those lands under earlier agreements with the Papacy. Luna: Wait, didn't Portugal already have some rights from previous treaties? Lucas: Exactly. They had the Treaty of Alcáçovas in 1479, which gave them sovereignty over the Azores, Madeira, and the Canary Islands, plus exclusive rights to trade below a certain latitude in the Atlantic. Luna: But Columbus’s discovery broke that boundary entirely. Lucas: It did, and when news reached Rome, Pope Alexander VI, a Spaniard himself, intervened with the bull Inter Caetera in May 1493. Luna: Did he just draw a line himself without asking anyone? Lucas: He essentially did, granting Spain all lands west and south of a meridian 100 leagues west of the Cape Verde islands, while giving Portugal everything east of that line. Luna: That seems incredibly generous to Portugal if they didn't even ask. Lucas: It was generous only on paper because the line was arbitrary and poorly understood, but King João II of Portugal refused to accept it outright. Luna: He wasn't going to let Spain dictate his fate so easily. Lucas: Precisely. João II mobilized his navy and threatened war, forcing the Spanish monarchs Ferdinand and Isabella to come to the negotiating table. Luna: So the threat of force actually changed the terms of the deal. Lucas: It shifted the boundary significantly westward, moving it to 370 leagues west of the Cape Verde islands, a distance that would eventually encompass the bulge of Brazil. Luna: That tiny adjustment gave Portugal half of South America. Lucas: It did, and it also meant that Portugal could legally explore and settle parts of Africa and Asia without Spanish interference. Luna: How did they even measure that distance accurately back then? Lucas: They used astrolabes and dead reckoning, relying heavily on navigators like Aleixo Fernandes to estimate longitude based on time and speed. Luna: That must have been incredibly imprecise. Lucas: It was wildly inaccurate, which led to disputes for decades until better instruments were developed, but the legal principle held firm. Luna: Did other European nations just accept this division? Lucas: Most ignored it entirely, especially England and France, who rejected the concept of Mare Clausum, or closed sea, in favor of Mare Liberum. Luna: So the rest of Europe said the ocean belonged to everyone. Lucas: Right, Grotius would later formalize this argument in the seventeenth century, challenging Iberian dominance over global waters. Luna: It feels like the seeds of modern international law were being sown right there. Lucas: Absolutely, because the Treaty of Tordesillas wasn't just about land; it was about jurisdiction and divine mandate. Luna: Did the Church really support dividing the world like property? Lucas: The Church viewed it as a way to organize missionary work, ensuring each empire knew which souls they were responsible for converting. Luna: That’s a heavy justification for colonial expansion. Lucas: It certainly was, and it laid the groundwork for the cultural divide we still see today between Latin America and the Caribbean. Luna: So one line determined the language spoken in entire continents. Lucas: Yes, and it dictated which religion dominated which region, shaping identities for five hundred years. Luna: It’s wild how much power a piece of paper can hold. Lucas: For sure, but remember that behind every treaty are people fighting for resources and survival. Luna: And listeners who keep these stories alive help preserve that human context. Lucas: Exactly, your support allows us to dig deeper into these overlooked moments. Luna: If you want to help us continue exploring history ad-free, visit buy me a coffee dot com slash fexingo — that's F. E. X. I. N. G. O. Lucas: We appreciate every bit of help that keeps this network running smoothly for curious minds. Luna: Thanks for listening, and now back to the map. Lucas: Back to the map, where the line continued to shift as explorers pushed further into the unknown. Luna: Did the border ever change again after 1494? Lucas: It did, most notably with the Treaty of Zaragoza in 1529, which drew a similar line in the Pacific. Luna: So they tried to do the same thing on the other side of the world. Lucas: They did, resolving the dispute over the Moluccas, or Spice Islands, by splitting the globe in two different meridians. Luna: Two lines crossing the entire planet just to divide spices. Lucas: Essentially, yes, showing how greed drove geography long before satellites existed. Luna: It makes you wonder what lines we draw today that future generations might question. Lucas: A thoughtful question, and perhaps one worth asking as we look at our own maps.