Latest / Trade Routes That Changed Human History Forever — Fexingo History / The Monsoon Marketplace: Rhapta and East African Trade Networks
Transcript
- Lucas: We've talked a lot about the Silk Road, about Roman glass in China, about Indian ports like Muziris. But there's a whole other branch of this global network that we haven't really touched on — the trade route down the East African coast, into what the Greeks called Azania. Luna: Azania — that's a name I've heard, but I don't actually know where it was. Lucas: It's a stretch of coast from about modern-day Somalia down to Tanzania. And the key to it was the monsoon winds. The same winds that carried Roman ships to India also blew south along the African coast. Roman merchants, or more likely Greek-speaking Egyptians, would sail from Berenike or Myos Hormos, across the Red Sea, then catch the monsoon south. And their main destination was a place called Rhapta. Lucas: Rhapta is mentioned in the Periplus of the Erythraean Sea — that first-century merchant's guide we've referenced before. The Periplus describes Rhapta as a major marketplace, the last port of Azania. It says the region was ruled by a local chief, but under the authority of the Kingdom of Himyar — that's in Yemen. So you've got this fascinating power dynamic: an Arabian kingdom controlling an East African port. Luna: So the Himyarites were the middlemen? Lucas: Exactly. They had colonies or at least strong influence along the coast. The Periplus says Rhapta's chief was appointed by Himyar, and that the port was a hub for ivory, tortoiseshell, rhinoceros horn, and cinnamon — but also something called 'cinnamon-gathered' from deeper inland. And what did they trade for? Roman glass, Egyptian cloth, iron tools, wine, and Indian grain. It was a classic Indian Ocean exchange. Lucas: Now, the big mystery is: where exactly was Rhapta? The Periplus says it was near a river called the Rhaptos, and that the coast had a distinctive shape — a bay with a shallow sea. Many scholars think it was near modern Dar es Salaam in Tanzania, or maybe the Rufiji River delta. Some even think it's now underwater — a sunken city. Luna: A sunken city — like a Tanzanian Atlantis? Lucas: Sort of. The coast has changed dramatically in two thousand years. Sea levels rose, rivers shifted. There's a place called Mafia Island, south of Zanzibar, where archaeologists have found Roman beads and pottery from the first to third centuries AD. That might be close. But no definitive Rhapta has been found. It's one of the great unsolved puzzles of ancient trade. Lucas: And then there's the people of the interior. The Periplus mentions tribes called the Blemmyes — though they were usually further north, in the Eastern Desert of Egypt. But it also describes 'hunting people' who lived in the mountains and traded ivory. Some think these were ancestors of the Hadza or Sandawe, the ancient hunter-gatherers of Tanzania. That would mean the trade networks reached deep into the Rift Valley. Luna: So the ivory they sold at Rhapta came from hundreds of miles inland. Lucas: Right. And the Periplus says the ivory was 'like that of the Indian elephant' — which is interesting, because African forest elephant ivory was actually harder and more prized in some Roman markets. Pliny the Elder mentions African ivory being imported through the Red Sea. So Rhapta may have been a key source for Rome's luxury goods. Lucas: Let's talk about cinnamon, because that's another weird twist. Cinnamon was supposed to come from India or Southeast Asia, but the Periplus says it was also gathered in the Horn of Africa — specifically from a place called 'the Cinnamon Country' near Cape Guardafui. Some scholars think that cassia, a similar spice, was harvested in East Africa and shipped to Arabia, where it was then resold as Indian cinnamon. The Romans never knew the difference. Luna: So the spice trade was even more tangled than we thought. Lucas: Completely. And this East African network wasn't just about Rhapta. There were other ports: Opone, which is modern-day Ras Hafun in Somalia, was a major stop. The Periplus says ships from India and Egypt met there. Archaeologists have found Roman glass and Indian pottery at Ras Hafun, confirming it was a hub. So you had a whole string of emporia along the coast, each trading different goods. Lucas: And then there's the geopolitical side. By the third century, the Kingdom of Axum — in modern Ethiopia and Eritrea — began to challenge Himyar for control of these trade routes. Axum was a major power: they had their own port, Adulis, and they eventually conquered parts of Yemen. The rivalry between Axum and Himyar over the East African trade was intense, and it even drew in Rome and Persia. It's a whole chapter of ancient geopolitics that rarely gets told. Luna: And this is all happening at the same time as the Roman empire is at its peak. Lucas: Exactly. So when we think of globalisation in the ancient world, it's not just the Silk Road. The Indian Ocean was just as connected. And the East African coast was a vital part of that. The people of Azania weren't passive — they were active traders, shaping the flow of goods and ideas. They adopted Islam later, but even before that, they had contact with Christianity through Axum. The Periplus even mentions that the chief of Rhapta knew some Greek. Lucas: I think what strikes me most is how much we still don't know. Rhapta itself hasn't been found. Maybe it's underwater, maybe it's buried under modern settlements. But every now and then, a farmer in Tanzania digs up a Roman bead, or a pearl from India, and we get another clue. It's a reminder that history is always being rewritten. Luna: It's amazing that a single document like the Periplus can open up so much. Lucas: It really does. And you know, conversations like this are exactly why we keep making these episodes — because there's so much more to explore. If you've been enjoying these deep dives into forgotten trade routes, a couple of dollars a month is genuinely what keeps these going — buy me a coffee dot com slash fexingo, if you've gotten something out of them. Luna: Yeah, it's a small thing that makes a big difference for us. Lucas: So back to Rhapta: there's also a fascinating later account from the sixth-century monk Cosmas Indicopleustes, who wrote about the 'Land of the Aromatics' — the Somali coast — and described the cinnamon trade still flourishing. So this network didn't just fade away; it evolved. By the time of the Islamic caliphates, East African ports like Mogadishu and Kilwa were major players in the Indian Ocean world. But the roots were there, in that first-century Greek guidebook. Luna: And the people of Azania themselves — we don't even know what they called their own cities. Lucas: That's the hardest part. The names we have are Greek or Arabic. The local names, the languages, the beliefs — most of it is lost. But archaeology is slowly filling in the gaps. At sites like Mafia Island and Ras Hafun, we're finding Swahili pottery that predates the Islamic period, showing a continuous culture. So the story of Rhapta is really the story of how Africa was connected to the ancient world — and it's a story that's still being written.