Portuguese Colonialism

Portugal's expansion began as a raiding project and hardened into a system. After Ceuta in 1415, captains working under Prince Henry pushed south along the Atlantic coast of Africa, and in 1444 a cargo of some 235 captives was auctioned at Lagos in the Algarve — the first large slave auction of the European Atlantic, described in unembarrassed detail by the royal chronicler Gomes Eanes de Zurara.

The instrument of control was the feitoria: a fortified trading post, not a settled colony. Elmina, built on the Gold Coast in 1482, is the model — a garrison, a warehouse, and a monopoly enforced by artillery. Papal bulls (Dum Diversas, 1452, and Romanus Pontifex, 1455) granted the Portuguese Crown the right to reduce non-Christians to perpetual servitude, and the 1494 Treaty of Tordesillas divided the unclaimed world with Castile along a line drawn in an office in Spain.

The uninhabited island of São Tomé, settled from the 1490s, is where the components were first assembled: a single export crop (sugar), a labour force bought on the nearby mainland, an ocean between the worker and any possibility of return, and an accounting system that treated human beings as depreciating stock. By the 1520s São Tomé was the largest sugar producer in the world.

The island's importance is that the model was portable. Transplanted to north-eastern Brazil after 1530, it produced the engenho — the sugar mill and its dependent slave village — which the Dutch, English and French then copied into the Caribbean. Every later plantation society in the Americas descends, technically and administratively, from an experiment run on a small equatorial island by Portuguese planters and Genoese financiers.

Brazil was not a colony with slavery in it; it was a colony built as a slave economy and then run as one for three centuries. Sugar in Bahia and Pernambuco, gold and diamonds in Minas Gerais after the 1690s, coffee in the Paraíba valley in the nineteenth century — each boom was answered by a larger import of people. Mortality in the mines and mills was high enough that the population had to be replenished by purchase rather than reproduced.

Resistance was continuous. The quilombo of Palmares in the interior of Alagoas survived for most of the seventeenth century and at its height sheltered thousands of escaped people; it was destroyed by a Portuguese-commissioned expedition in 1694 and its leader Zumbi was killed in 1695. Brazil declared independence in 1822 and kept the institution for another sixty-six years, ending it with the Lei Áurea of 13 May 1888 — without land, compensation or citizenship provision for the people freed.

Portugal's African empire in its recognisable form is late. The Berlin Conference of 1884–85 required effective occupation, so Lisbon spent the following forty years conquering the interiors of Angola and Mozambique it had claimed on maps for centuries. Large parts of Mozambique were leased outright to chartered companies — the Companhia de Moçambique and the Companhia do Niassa — which levied taxes, ran their own police and rented out labour.

Two legal instruments governed daily life. Chibalo was forced labour, imposed as a penalty for non-payment of the hut tax and used to build roads, ports and plantations and to supply South Africa's mines under labour treaties from which Lisbon took a cut. The indigenato code, formalised in 1929 and abolished only in 1961, divided the population into civilizados and indígenas, denying the latter — the overwhelming majority — citizenship, movement without a pass, and access to the courts on equal terms.

While Britain and France were negotiating exits, the Estado Novo dictatorship declared its colonies to be overseas provinces of a single, indivisible nation, and fought. War began in Angola in 1961, in Guinea-Bissau in 1963 and in Mozambique in 1964, and by the early 1970s absorbed close to half of the Portuguese state budget and conscripted a generation of young men. Napalm and defoliants were used; villages were concentrated into aldeamentos.

The atrocities are documented by name. At Batepá on São Tomé in 1953 a colonial administration killed hundreds of Forros in response to a rumoured revolt. At Mueda in Mozambique in 1960 troops fired on an unarmed protest. At Wiriyamu in December 1972 Portuguese forces massacred civilians in a cluster of villages; the report by the British priest Adrian Hastings, published in The Times in July 1973, broke the story internationally. The war ended not by defeat in the field but by the Carnation Revolution of 25 April 1974, when the Portuguese army overthrew its own government in Lisbon.

Decolonisation was abrupt. Independence came to Guinea-Bissau (recognised 1974), Mozambique, Angola, Cape Verde and São Tomé and Príncipe in 1975. Several hundred thousand Portuguese settlers — the retornados — left within months, taking technical staff with them; Angola inherited a country where the great majority of the population could not read and where the departing administration had, in places, disabled the machinery it could not carry. Angola and Mozambique fell immediately into Cold War proxy wars that lasted into the 1990s and 2000s.

East Timor was abandoned rather than decolonised: Portugal withdrew in 1975 and Indonesia invaded within days, beginning an occupation that killed an estimated 100,000 to 180,000 people before the 1999 referendum. Macau, the last territory, was returned to China on 20 December 1999 — the formal end of the empire that had begun 584 years earlier at Ceuta.

1. 1415

   Ceuta captured; the empire begins.

2. 1444

   First large auction of enslaved Africans at Lagos, Portugal.

3. 1452 / 1455

   Papal bulls authorise perpetual enslavement of non-Christians.

4. 1482

   Elmina castle built on the Gold Coast.

5. 1494

   Treaty of Tordesillas divides the world with Castile.

6. 1500

   Cabral lands in Brazil; 1510, Goa taken.

7. 1490s–1520s

   São Tomé becomes the world's largest sugar producer on enslaved labour.

8. 1694–1695

   Palmares destroyed; Zumbi killed.

9. 1822

   Brazil independent; the slave economy continues.

10. 1869–1878

    Slavery abolished in the African colonies; forced labour replaces it.

11. 1888

    Brazil abolishes slavery — the last country in the Americas.

12. 1929

    The indigenato code formalised.

13. 1953

    Batepá massacre, São Tomé.

14. 1961

    War begins in Angola; India takes Goa, Daman and Diu.

15. 1972

    Wiriyamu massacre, Mozambique.

16. 1974

    Carnation Revolution ends the dictatorship and the war.

17. 1975

    Angola, Mozambique, Cape Verde, São Tomé independent; Indonesia invades East Timor.

18. 1999

    Macau handed to China; the empire ends.

How many Africans did Portugal transport into slavery?

Portuguese and Brazilian vessels embarked roughly 5.8 million enslaved Africans between 1514 and 1866 — about 46 per cent of the entire transatlantic traffic, more than any other national carrier. Around 4.9 million of them were landed in Brazil. The figures come from the Trans-Atlantic Slave Trade Database, built from surviving voyage records, and are minimum counts: voyages without documentation are not in them.

How long did the Portuguese Empire last?

From the capture of Ceuta in 1415 to the handover of Macau in 1999 — 584 years, the longest-lived of the modern European empires. Brazil separated in 1822; Goa, Daman and Diu were taken by India in 1961; Guinea-Bissau, Mozambique, Angola, Cape Verde and São Tomé became independent in 1974–75 after a thirteen-year colonial war; East Timor was occupied by Indonesia in 1975 and independent only in 2002.

Was Portuguese colonialism milder than the other empires?

No. The claim rests on lusotropicalismo, a theory advanced by the Brazilian sociologist Gilberto Freyre and adopted as state doctrine by the Estado Novo, which held that the Portuguese mixed rather than segregated. The record contradicts it: forced labour (chibalo) persisted in Mozambique and Angola into the 1960s, the indigenato code stripped the overwhelming majority of African subjects of citizenship, literacy in Portuguese Africa at independence was in the single digits, and the colonial wars of 1961–74 killed tens of thousands of civilians.

When did slavery end in the Portuguese world?

Portugal abolished slavery in its African colonies in 1869 and completed emancipation in 1878, but replaced it with contract labour and forced-labour drafts that observers such as Henry Nevinson in 1906 described as slavery under a new name. Brazil, independent since 1822, abolished slavery only in 1888 — the last country in the Americas to do so.

Has Portugal apologised or paid reparations?

There has been no formal state apology and no reparations programme. In April 2023 President Marcelo Rebelo de Sousa said Portugal should take full responsibility for its role in slavery and colonial massacres; the government distanced itself from the remark within days. Angola and Mozambique have raised colonial-era debts and archives repeatedly; no restitution mechanism exists.