# The Chronicle of São Tomé and Príncipe: Empty volcanic islands turned by Portugal into one of the world's first slave-plantation societies — a sugar, then cocoa, economy built on bondage and forced labour, scarred by the 1595 revolt of Rei Amador and the 1953 Batepá massacre, and freed at last in 1975. History of São Tomé and Príncipe: Empty volcanic islands turned by Portugal into one of the world's first slave-plantation societies — a sugar, then… Canonical: https://terralore.co/country/STP/chronicle Updated: 2026-06-13 Founding: Independence from Portugal — 12 July 1975. São Tomé and Príncipe became a sovereign state on 12 July 1975, when, following the 1974 Carnation Revolution in Lisbon and the collapse of Portugal's overseas empire, the Movement for the Liberation of São Tomé and Príncipe (MLSTP) took power and its secretary-general Manuel Pinto da Costa became the country's first president. The new nation's history reached back to the early 1470s, when Portuguese mariners found the islands uninhabited, and to the settlement begun in 1493 that turned them into one of the earliest Atlantic slave-plantation societies — first for sugar, later for cocoa — and into a major entrepôt of the transatlantic slave trade. Independence in 1975 inaugurated a one-party socialist state under the MLSTP; multiparty democracy followed in 1990. When Portuguese navigators reached São Tomé and Príncipe in the early 1470s, the two equatorial islands in the Gulf of Guinea were entirely uninhabited. From the settlement begun in 1493 the Portuguese built on them one of the first true plantation economies of the Atlantic world: sugar estates worked by enslaved Africans, a brutal model later carried to Brazil and the Caribbean. The islands also served as a major staging post — an entrepôt — of the transatlantic slave trade. Their people grew from a forced mixture of Portuguese convicts (degredados), deported Jewish children, and enslaved and freed Africans, giving rise to the Forro and Angolar Creole societies and to repeated slave revolts, most famously that led by Rei Amador in 1595. After sugar declined, coffee and above all cocoa revived the plantation system in the nineteenth century, making São Tomé for a time the world's largest cocoa producer — worked under a notorious forced-contract (serviçais) regime exposed in the early-1900s 'cocoa slavery' scandal. Colonial violence culminated in the Batepá massacre of Forro islanders in 1953, a foundational memory for the nationalist movement (the MLSTP). São Tomé and Príncipe became independent from Portugal on 12 July 1975 under Manuel Pinto da Costa, passing through a one-party Marxist period before adopting multiparty democracy in 1990. This file carries the chronicle's sourced event record — every event with its year, summary and source keys (resolved under References below). The full reading narrative lives on the canonical page. ## Empty islands and the first plantation society — c. 1470 – 1530 Portuguese navigators found São Tomé and Príncipe uninhabited around 1470 and, from 1493, settled them with convicts, deported Jewish children and enslaved Africans — building one of the first sugar-and-slavery plantation economies of the Atlantic world. - c. 1470–1471: **Portuguese reach the uninhabited islands** — Portuguese navigators, by tradition João de Santarém and Pero Escobar, reached São Tomé and Príncipe, finding the equatorial islands entirely uninhabited and suited to bases for mainland trade. [britannica-stp, wiki-history-stp, wiki-stp] - 1493: **São Tomé settled by Álvaro Caminha** — The first successful settlement of São Tomé was established under a crown grant to Álvaro Caminha, beginning the islands' colonisation. [wiki-history-stp, britannica-stp] - 1493: **Deportation of Jewish children and convicts** — The early colonists included Portuguese degredados and some two thousand children taken from expelled Jewish families and deported to be raised as Christians, most of whom died — part of the forced human mixture that founded Creole society. [wiki-history-stp, britannica-stp] - c. 1500: **Settlement of Príncipe** — The smaller island of Príncipe was settled under a similar crown arrangement, extending Portuguese control over the archipelago. [wiki-history-stp] - early 16th century: **The first sugar-slavery plantations** — Settlers planted sugar cane worked by enslaved Africans, creating one of the earliest Atlantic plantation economies — a model later exported to Brazil and the Caribbean. [worldhistory-stp, britannica-stp, wiki-history-stp] ## Sugar, the slave trade and the revolt of Rei Amador — 1530 – 1700 São Tomé briefly became the world's leading sugar producer and a great entrepôt of the Atlantic slave trade, while runaway slaves formed the Angolar maroon community and, in 1595, rose under Rei Amador in one of the largest slave revolts of the Atlantic world. - by 1550: **São Tomé a leading sugar producer** — The number of sugar mills grew to around sixty, making São Tomé Africa's foremost sugar exporter and for a time one of the world's largest producers. [worldhistory-stp, britannica-stp] - c. mid-16th century: **The Angolar maroon community** — Escaped slaves formed independent communities in the forested interior; the Angolares, of disputed origin, settled the rugged south and lived by fishing, rejecting plantation labour. [britannica-forros, saotomeexpert-angolares, wiki-history-stp] - 9 July 1595: **The revolt of Rei Amador** — Rei Amador united maroons and plantation slaves in a great revolt that overran much of São Tomé, one of the largest slave uprisings of the Atlantic world. [wiki-rei-amador, worldhistory-stp, wiki-history-stp] - 1596: **Capture and execution of Rei Amador** — After his forces had held much of the island, Amador was captured and executed by the Portuguese; he endured as a hero of resistance and is now honoured as a national figure. [wiki-rei-amador, worldhistory-stp] - 1641: **Dutch sack of São Tomé** — Dutch forces captured and occupied São Tomé for several years, razing sugar mills and accelerating the long decline of the island's plantation economy. [wiki-history-stp, britannica-stp] Figures: - Rei Amador (Amador Vieira) (died 1596) — Leader of the 1595 slave revolt. Associated with the Angolares, he led the great slave uprising of 1595 that overran much of São Tomé. Captured and executed in 1596, he is remembered as a national hero of resistance. ## Cocoa, the roças and the 'cocoa slavery' scandal — 1700 – 1950 After sugar collapsed, coffee and especially cocoa revived the plantation system in the nineteenth century, making São Tomé for a time the world's largest cocoa producer — worked by African contract labourers (serviçais) under conditions exposed as forced labour in the early-1900s international scandal. - early 19th century: **Coffee and cocoa introduced** — Coffee and then cocoa, brought from Brazil around the 1820s, were planted on the islands, reviving the plantation economy after the long decline of sugar. [wiki-history-stp, britannica-stp] - 1869: **Portugal decrees abolition of slavery** — Portugal began abolishing slavery in its empire, with an 1869 decree and full emancipation completed in the 1870s — though forced contract labour soon took its place. [wiki-history-stp, chocolateclass-stp] - c. 1905–1908: **World's largest cocoa producer** — Worked by the roças and their contract labourers, São Tomé became for a time the world's leading producer of cocoa. [wiki-history-stp, chocolateclass-stp, saotomeexpert-servicais] - 1906: **Nevinson exposes 'A Modern Slavery'** — The journalist Henry Nevinson published A Modern Slavery, exposing the serviçal contract-labour system as forced labour, with around one in five workers dying each year. [chocolateclass-stp, saotomeexpert-servicais] - 1909: **Cadbury and the cocoa boycott** — After Joseph Burtt's report confirmed the abuses, the chocolate firms Cadbury, Fry and Rowntree announced a boycott of São Tomé cocoa, an international scandal that shamed Portugal but left coerced labour largely intact. [chocolateclass-stp, saotomeexpert-servicais] ## Batepá, the MLSTP and the road to independence — 1950 – 1975 The 1953 Batepá massacre of Forro islanders by the colonial regime became the founding memory of São Toméan nationalism; the MLSTP carried the cause until Portugal's 1974 revolution opened the way to independence on 12 July 1975. - 3 February 1953: **The Batepá massacre** — Under Governor Carlos Gorgulho, colonial police and settlers killed many Forro islanders who resisted forced labour — a massacre, with the toll uncertain, that became the founding memory of São Toméan nationalism. [museu-batepa, wiki-batepa, academia-batepa] - 1960s: **Founding of the MLSTP** — São Toméan exiles organised the liberation movement that became the MLSTP, based for a time in Gabon, drawing strength from the memory of Batepá. [britannica-stp-independence, wiki-mlstp] - 25 April 1974: **Carnation Revolution in Portugal** — A military coup overthrew the Lisbon dictatorship, and the new government moved to decolonise, opening the path to São Toméan independence. [wiki-history-stp, britannica-stp-independence] - late 1974: **Transfer of power negotiated** — Portuguese and MLSTP representatives met to arrange the handover, recognising the MLSTP as the islands' representative and establishing a transitional government. [wiki-history-stp, britannica-stp-independence] - 12 July 1975: **Independence proclaimed** — São Tomé and Príncipe became an independent state, with the MLSTP's Manuel Pinto da Costa as its first president. [wiki-history-stp, britannica-stp-independence, blackpast-pinto-da-costa] Figures: - Manuel Pinto da Costa (born 1937) — Independence leader and first President. Leader of the MLSTP who became São Tomé and Príncipe's first president at independence in 1975 and headed its one-party socialist state until 1991; he later returned to the presidency from 2011 to 2016. ## One-party state, democracy and the modern republic — 1975 – present Independence brought a one-party Marxist state under the MLSTP and Manuel Pinto da Costa; economic crisis forced a transition to multiparty democracy in 1990, since when São Tomé and Príncipe has been one of Africa's more stable small democracies. - December 1975: **One-party socialist state** — A new constitution made the MLSTP the sole legal party; Pinto da Costa built a one-party Marxist state aligned with the Eastern bloc and nationalised the cocoa plantations. [britannica-stp-independence, blackpast-pinto-da-costa, wiki-mlstp] - August 1990: **Multiparty constitution adopted** — Amid economic crisis, a referendum approved a new constitution introducing multiparty democracy and presidential term limits, making São Tomé an early African democratiser. [britannica-stp-independence, wiki-stp] - 1991: **First free elections** — Free multiparty elections brought Miguel Trovoada, a former prime minister returning from exile, to the presidency as an independent candidate. [britannica-stp-independence, wiki-stp] - July 2003: **Short-lived military coup** — Soldiers briefly seized power over corruption and oil-revenue grievances; President Fradique de Menezes was restored within days through negotiation. [wiki-stp, britannica-stp-independence] - 2021: **Carlos Vila Nova elected president** — Carlos Vila Nova won the presidency, continuing a record of peaceful, contested elections that has made São Tomé and Príncipe one of the region's more stable democracies. [wiki-stp] Figures: - Miguel Trovoada (born 1936) — President (1991–2001). A founding figure of the independence movement and former prime minister who, returning from exile, won the first free elections in 1991 and served two terms as president. Machine-readable claims — every event above as an addressable claim ID (TL:STP:event::) with its sources and a ready citation string: https://terralore.co/country/STP/chronicle.claims.json ## References - [britannica-stp] São Tomé and Príncipe — Encyclopaedia Britannica · https://www.britannica.com/place/Sao-Tome-and-Principe - [britannica-stp-independence] São Tomé and Príncipe — After independence — Encyclopaedia Britannica · https://www.britannica.com/place/Sao-Tome-and-Principe/After-independence - [britannica-pinto-da-costa] Manuel Pinto da Costa — Encyclopaedia Britannica · https://www.britannica.com/biography/Manuel-Pinto-da-Costa - [britannica-forros] Forros (people) — Encyclopaedia Britannica · https://www.britannica.com/topic/Forros - [worldhistory-stp] The Portuguese Colonization of São Tomé and Príncipe — World History Encyclopedia · https://www.worldhistory.org/article/1763/the-portuguese-colonization-of-sao-tome-and-princi/ - [blackpast-pinto-da-costa] Manuel Pinto da Costa (1937– ) — BlackPast.org · https://www.blackpast.org/global-african-history/manuel-pinto-da-costa-1937/ - [museu-batepa] Batepá Massacre — Museu do Aljube (Resistance and Freedom Museum, Lisbon) · https://www.museudoaljube.pt/en/2023/02/03/batepa-massacre/ - [academia-batepa] The February 1953 Massacre in São Tomé: Crack in the Salazarist Image of Multiracial Harmony — Academic article (Africa: Journal of the International African Institute) · https://www.researchgate.net/publication/351091344_The_February_1953_Massacre_in_Sao_Tome - [chocolateclass-stp] Sugar, Cocoa, and Slavery in Portuguese Colonial Africa — Chocolate Class (Harvard University course site) · https://chocolateclass.wordpress.com/2020/03/24/sugar-cocoa-and-slavery-in-portuguese-colonial-africa/ - [saotomeexpert-servicais] The Serviçais — Plantation Contract Workers — São Tomé Expert · https://www.saotomeexpert.pt/en/sao-tome-and-principe-plantations-contract-workers/ - [saotomeexpert-angolares] The Angolares of São Tomé and Príncipe — São Tomé Expert · https://www.saotomeexpert.pt/en/sao-tome-and-principe-angolares-population/ - [wiki-history-stp] History of São Tomé and Príncipe — Wikipedia · https://en.wikipedia.org/wiki/History_of_S%C3%A3o_Tom%C3%A9_and_Pr%C3%ADncipe - [wiki-stp] São Tomé and Príncipe — Wikipedia · https://en.wikipedia.org/wiki/S%C3%A3o_Tom%C3%A9_and_Pr%C3%ADncipe - [wiki-rei-amador] Rei Amador — Wikipedia · https://en.wikipedia.org/wiki/Rei_Amador - [wiki-batepa] Batepá massacre — Wikipedia · https://en.wikipedia.org/wiki/Batep%C3%A1_massacre - [wiki-mlstp] Movement for the Liberation of São Tomé and Príncipe — Wikipedia · https://en.wikipedia.org/wiki/Movement_for_the_Liberation_of_S%C3%A3o_Tom%C3%A9_and_Pr%C3%ADncipe_%E2%80%93_Social_Democratic_Party Citation template: Terralore, "The Chronicle of São Tomé and Príncipe: Empty volcanic islands turned by Portugal into one of the world's first slave-plantation societies — a sugar, then cocoa, economy built on bondage and forced labour, scarred by the 1595 revolt of Rei Amador and the 1953 Batepá massacre, and freed at last in 1975.", terralore.co/country/STP/chronicle, retrieved .