Empty islands, a plantation model
When Portuguese navigators reached them around 1470, São Tomé and Príncipe had no human population at all. That blank slate made them a testing ground. The Portuguese planted sugar and worked it with enslaved Africans shipped from the mainland, creating one of the earliest true plantation-slavery economies — a model later exported to Brazil and the Caribbean on a vast scale.
The population that exists today grew out of that system: enslaved people, their descendants, escaped communities like the Angolares, and later contract workers. The creole cultures and languages of the islands are the direct product of this forced mixing.
Cocoa and coercion
Sugar faded, but in the 19th century cocoa arrived and the islands boomed again — for a time São Tomé was among the world's leading cocoa producers, its economy built on great estates called roças. Slavery had officially ended, but the plantations ran on "contract" labour brought from Angola, Cape Verde and Mozambique under conditions so harsh that a British chocolate-buyers' boycott in the early 1900s accused the trade of being slavery in all but name.
The defining wound of the colonial century came in 1953, when Portuguese authorities and settlers killed a large number of Forros — the creole islanders — in the Batepá massacre, after rumours of unrest over forced labour. The date, 3 February, is now a national day of remembrance and a foundation of the independence movement.
Independence and after
Independence came on 12 July 1975, as Portugal's empire collapsed after its own revolution. The new state began as a one-party, Soviet-leaning republic under the MLSTP, its cocoa estates nationalised and its economy soon in trouble as production slumped.
In 1990 the country did something unusual for the region: it dismantled the single-party system peacefully and became a multiparty democracy, and it has held competitive elections and changed governments by the ballot ever since — with a couple of brief, bloodless coup scares that came to nothing. For a micro-state, that record of stability is its real achievement.
Oil that never came, chocolate that did
In the 2000s the discovery of oil in the Gulf of Guinea promised sudden riches, and a joint zone with Nigeria was set up to share any bonanza. The big commercial strike never really materialised, and the islands were spared the curse that oil has been for several neighbours — while also missing the windfall they had hoped for.
Instead the economy leans on cocoa again, now sold as rare single-origin chocolate, on fishing, and increasingly on eco-tourism drawn by the islands' extraordinary nature. Príncipe in particular, a UNESCO biosphere reserve, has staked its future on low-impact tourism among some of the densest biodiversity per square kilometre on the planet.