Journey through the people, kingdoms and ideas that shaped Sierra Leone, from the toolmakers of Yengema Cave and the Temne, Mende, Limba and Sherbro peoples to the Portuguese who named the Lion Mountains in 1462 and the republic of today.
Follow the Mane invasions, Bunce Island and the Atlantic slave trade, the Province of Freedom and the Nova Scotians who founded Freetown, the Liberated Africans and the Krio, the Hut Tax War of 1898, independence in 1961, the coups, the civil war of 1991–2002 and the peaceful changes of government since.
Explore 10 historical periods, the indigenous kings and queens, company governors, British monarchs, colonial governors, governors-general, military rulers and presidents, the chief ministers and prime ministers, and 12 chapters of territorial change.
The indigenous kings and queens, the governors of the Province of Freedom and the Sierra Leone Company, the British Crown and its colonial governors, the military rulers and presidents of the republic, and its chief ministers and prime ministers.
A Journey Through the Ages
Sierra Leone: the Stone Age toolmakers of Yengema Cave, the Sapes and the Mane, Bunce Island and the Atlantic slave trade, the Province of Freedom and Freetown, the Krio and the Liberated Africans, the Hut Tax War, independence in 1961, the coups and the one-party state, the civil war of 1991–2002, Ebola and the peaceful changes of government of 2007 and 2018.
10,000 BCE – 1461
Stone Age hunters at Yengema Cave and Kamabai, early farmers and iron-workers, and the settlement of the Limba, Bullom, Sherbro, Kissi, Gola, Temne and other peoples, with Mande trade routes carrying salt and kola nuts.
1462 – 1671
Pedro de Sintra's "Serra Lyoa" (1462), the Sapes confederacy and its ivory carvers, Portuguese lançados, the Mane invasions of the mid-16th century, the first English slaving voyages and the Jesuit mission.
1672 – 1786
The Royal African Company and Bunce Island, pirates on the coast, the Futa Jallon jihad, Afro-European trading families and the shipment of tens of thousands of captives, many to the rice plantations of South Carolina and Georgia.
1787 – 1807
The Black Poor and Granville Town (1787), the Sierra Leone Company, the Nova Scotian Settlers who founded Freetown (1792), the French attack of 1794 and the Jamaican Maroons (1800).
1808 – 1895
The Crown Colony (1808), the anti-slavery squadron and tens of thousands of Liberated Africans, the rise of the Krio, Fourah Bay College (1827), the missions, and British expansion along the coast and into the interior.
1896 – 1950
The Protectorate (1896) and the Hut Tax War (1898), the railway, diamonds and iron ore, the two world wars, labour protest and Wallace-Johnson's Youth League, and the slow opening of colonial politics.
1951 – 1966
The 1951 constitution and the SLPP, Milton Margai as Chief Minister and Premier, the riots of 1955–56 and the diamond rush, independence on 27 April 1961 and the Albert Margai years.
1967 – 1990
The disputed 1967 election and the coups of 1967–68, Siaka Stevens and the APC, the republic (1971), the one-party constitution (1978), the costly 1980 OAU summit, Joseph Momoh and economic collapse.
1991 – 2002
The RUF invasion of 1991, the NPRC junta, elections and the Abidjan accord, the AFRC coup, the January 1999 attack on Freetown, the Lomé accord, UNAMSIL, British intervention and the end of the war in January 2002.
2003 – present
The Special Court and the Charles Taylor trial, peaceful changes of power in 2007 and 2018, the Ebola epidemic of 2014–16, the 2017 mudslide, the disputed 2023 election and the reforms and crises of 2024–2026.
Lion Mountains, Bunce Island, Freetown and the Republic – Prehistory to Today
From Stone Age rock shelters and the Sapes to the Mane invasions and Bunce Island, the Province of Freedom and Freetown, the Crown Colony and Protectorate, independence in 1961, the civil war of 1991–2002 and the republic today.
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From the carved soapstone nomoli of the forest and the Sapi-Portuguese ivories to the cotton tree of Freetown, the stone castle of Bunce Island and the lecture halls of Fourah Bay, Sierra Leone has left the world a record of Africa's first meeting with Europe's ship-borne trade, a haven founded for Black settlers and for Africans freed from slave ships, the English-based Krio language, a hard-fought road to independence in 1961, a civil war that ended in 2002 and a peace that has held since, between Freetown, Bunce Island, Bo, Kenema, Makeni, the Kono diamond fields, Monrovia, Conakry and London.
Farmers across the south and east of the country still turn up small figures carved from soapstone, which the Mende call nomoli and the Kissi pomdo. Most scholars place them between about the twelfth and sixteenth centuries, and the Mende and Kissi of today adopted them, setting nomoli in rice fields to bring good harvests. Large collections are held in the British Museum and other museums.
The carvers of the Sierra Leone coast also worked ivory for Portuguese patrons from about 1490 to 1530: lidded saltcellars supported by human figures, spoons, and oliphants, side-blown hunting horns, some bearing the arms of Portugal and the mottoes of King Manuel I. Well over a hundred of these Sapi-Portuguese ivories survive, among the earliest African artworks made for a global market. The women’s Sande society, whose leaders wear the black wooden sowei helmet mask, is one of the few masking traditions in Africa performed by women.
Around 1670 English traders fortified Bunce Island, about 30 kilometres up the Sierra Leone River, and for roughly 140 years it was the main British slaving station of the river. After the Scottish merchants Richard Oswald and Alexander Grant bought it in 1748, thousands of Africans passed through it to the West Indies and to South Carolina and Georgia, where planters paid premium prices for captives from the Rice Coast.
In 2005 Thomalind Martin Polite, a descendant of Priscilla, a ten-year-old girl shipped to Charleston in 1756, travelled to Sierra Leone in a homecoming that drew national attention, and the Gullah and Geechee culture of the Sea Islands still preserves strong Sierra Leonean connections in its language, cooking and basketry.
In May 1787 some 400 settlers from London’s Black Poor landed to found Granville Town in the Province of Freedom, and roughly a third of them died within months. The town that lasted was Freetown, founded in March 1792 by Black Loyalists from Nova Scotia who gathered for a thanksgiving service beneath a great cotton tree on 11 March. The Cotton Tree became the symbol of the city until a storm felled it in May 2023.
After the Slave Trade Act of 1807 the colony passed to the Crown on 1 January 1808 and became the base of the Royal Navy’s West Africa Squadron. Between 1808 and 1860 the squadron freed some 150,000 Africans, many of them landed at Freetown as Liberated Africans. With the Nova Scotians and the Jamaican Maroons who arrived in 1800 they formed the Krio people, Freetown’s founding community.
Krio, an English-based creole with grammar and many words drawn from West African languages, especially Yoruba, grew up in Freetown between about 1800 and 1850. It is today the lingua franca of Sierra Leone, spoken by the great majority of the population, while the Krio people remain an influential community in the capital.
Fourah Bay College, opened by the Church Missionary Society on 18 February 1827 with Samuel Ajayi Crowther as its first student, was the first Western-style institution of higher learning in West Africa. Its graduates spread through British West Africa and earned Freetown the name “Athens of West Africa”; the college is now part of the University of Sierra Leone.
When Governor Frederic Cardew introduced a hut tax on 1 January 1898, Bai Bureh in the north and the Mende in the south rose in the Hut Tax War. Bai Bureh surrendered on 11 November 1898 after nine months of evading capture, and he is remembered as the central figure of the nationalist memory of 1898. Sengbe Pieh, the Mende rice farmer who led the Amistad revolt of 1839, is honoured as a national hero.
Sierra Leone became independent peacefully on 27 April 1961 under Sir Milton Margai, and a republic on 19 April 1971. In 1967 and 1968 the army seized power before civilian rule returned, and the one-party constitution of 1978 made the All People’s Congress the only legal party until the multiparty constitution of 1991.
The civil war that began at Bomaru on 23 March 1991 was declared over by President Kabbah at Lungi on 18 January 2002: “di war don don”. About 50,000 people were killed and some 2 million, close to half the population, were displaced. The Truth and Reconciliation Commission reported in 2004, and the Special Court convicted Charles Taylor in 2012 and sentenced him to 50 years, the first former head of state convicted by an international court since Nuremberg.
Peace has held. Power changed hands at the ballot box in 2007 and 2018; the country endured Ebola in 2014–16, with about 14,100 cases and 3,955 deaths, and the Freetown mudslide of August 2017, which killed 1,141 people. Parliament abolished the death penalty in 2021, child marriage was outlawed in 2024, and in July 2025 UNESCO inscribed the Gola-Tiwai Complex, with Tiwai Island’s eleven primate species, as the country’s first World Heritage Site.
The timeline is built from the project's own research dossier and its event, ruler, head-of-government and map datasets, checked against English Wikipedia, Encyclopaedia Britannica, WorldStatesmen.org, UNESCO, State House Sierra Leone and other references. Links below lead to the main reference works; the pictures are not yet part of this edition.
Every event and every ruler has its own sources. See Sources & Further Reading in each timeline entry and ruler profile.
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Heritage · c. 2500 BC
Did you know that pottery from the Kamabai rock shelter and Yengema cave in northern and eastern Sierra Leone shows people have lived there for thousands of years, with some finds dated to around 2500 BC?
Science · by the 9th century
Did you know that iron working had reached the area of modern Sierra Leone by the 9th century AD, and by around AD 1000 coastal peoples were already farming the land?
Culture · c. 15th century
Did you know that small soapstone figures called nomoli, carved centuries ago by the Sapi, are still dug up by Mende and Kissi farmers, who sometimes place them in rice fields to bring good harvests?
Geography · 1462
Did you know that the Portuguese explorer Pedro de Sintra, sailing past the coast in 1462, named its mountainous peninsula Serra Lyoa, or Lion Mountains, the name that eventually became Sierra Leone?
Culture · c. 1490-1530
Did you know that Sapi carvers in Sierra Leone made intricate ivory salt cellars, spoons and hunting horns for Portuguese buyers around 1500, and these Afro-Portuguese ivories now sit in museums across Europe?
Society · c. 1545-1560
Did you know that the Mane, warriors from the interior who swept into Sierra Leone from about the 1540s, conquered the coastal peoples and founded ruling lineages that reshaped the region's politics and languages?
Firsts · 1562
Did you know that John Hawkins began England's role in the Atlantic slave trade in 1562 by seizing at least 300 Africans on the coast of Sierra Leone and selling them in Spanish Hispaniola?
Economy · 1670s
Did you know that Bunce Island, a tiny island only about 500 metres long in the Sierra Leone River, became a British slave fort that shipped tens of thousands of captives across the Atlantic over more than a century?
Myth or fact · 1719
Did you know that the Welsh pirate Howell Davis captured the Bunce Island slave fort in 1719, and his successor Bartholomew Roberts, the most successful pirate of the Golden Age, later raided the Sierra Leone coast too?
Culture · 1745
Did you know that John Newton, who later wrote the hymn Amazing Grace, was himself held almost as a slave on Plantain Island off Sierra Leone around 1745 before becoming a slave-ship captain and then an abolitionist?
Myth or fact · 1782-1783
Did you know that Richard Oswald, a part-owner of the Bunce Island slave fort, negotiated the 1783 Treaty of Paris with Henry Laurens, his former business agent in Charleston who had sold Bunce Island captives?
Society · 1787
Did you know that in 1787 around 400 poor Black Londoners, many of them former American Loyalists, sailed to Sierra Leone with abolitionist backing to found a settlement named the Province of Freedom?
Society · 1789
Did you know that the first settlers' town, Granville Town, named after abolitionist Granville Sharp, was burned down in 1789 by the Temne ruler King Jimmy after disputes over the land?
Society · 1792
Did you know that Freetown was founded in March 1792 by about 1,190 Black Loyalists from Nova Scotia, who had escaped slavery during the American Revolution and sailed across the Atlantic in 15 ships?
Society · 1800
Did you know that around 550 Jamaican Maroons, deported by Britain after fighting the Second Maroon War, reached Freetown in 1800 and helped put down an uprising by Nova Scotian settlers?
Firsts · 1808
Did you know that Sierra Leone became a British Crown colony on 1 January 1808 and Freetown became the base for the Royal Navy's West Africa Squadron, which seized slave ships after Britain's abolition of the trade?
Society · 19th century
Did you know that tens of thousands of Africans freed from captured slave ships, known as Liberated Africans or recaptives, were landed at Freetown and helped form the Krio people alongside the earlier settlers?
Firsts · 1827
Did you know that Fourah Bay College, founded in Freetown by the Church Missionary Society in 1827, is the oldest Western-style university in West Africa, earning Freetown the nickname Athens of West Africa?
Society · 1839
Did you know that Sengbe Pieh, a Mende rice farmer from Sierra Leone also known as Joseph Cinqué, led the 1839 revolt on the slave ship La Amistad and won freedom before the US Supreme Court?
Records · 1845
Did you know that the Sierra Leone Grammar School, founded in Freetown in 1845 by the Church Missionary Society, is one of the oldest secondary schools in sub-Saharan Africa?
Firsts · 1864
Did you know that Samuel Ajayi Crowther, a freed Yoruba captive who was the first student enrolled at Fourah Bay College, was consecrated in 1864 as the first African Anglican bishop?
Geography · 1896
Did you know that Britain declared a protectorate over the Sierra Leone hinterland only on 31 August 1896, so for most of the 19th century British rule covered little more than the Freetown coast?
Society · 1898
Did you know that the Temne chief Bai Bureh led the 1898 Hut Tax War against a new British tax on houses, holding off colonial forces for months before being captured and exiled to the Gold Coast?
Firsts · 1904
Did you know that the Sierra Leone Mountain Railway, opened in 1904, climbed from Freetown to Hill Station so European officials could live on cooler heights away from malaria, before closing in 1929?
Economy · 1930
Did you know that diamonds were first discovered in Sierra Leone in 1930 in the Kono District, a find that would shape the country's economy and, decades later, help fuel its civil war?
Records · 1939-1945
Did you know that during the Second World War Freetown's huge natural harbour was a key Allied convoy assembly point, where merchant ships gathered before the dangerous voyage north to Britain?
Society · 1951
Did you know that Milton Margai, a doctor who was the first person from the protectorate to qualify in medicine, founded the Sierra Leone People's Party in 1951 and became the country's first prime minister?
Firsts · 1961
Did you know that Sierra Leone won independence from Britain peacefully on 27 April 1961, a date still celebrated every year as Independence Day, with Milton Margai as its first prime minister?
Economy · 1964
Did you know that the leone, named after the country itself, was introduced on 4 August 1964, replacing the British West African pound at a rate of two leones to the pound?
Firsts · 1966
Did you know that Constance Cummings-John became mayor of Freetown in 1966, making her one of the first women in Africa to lead a capital city?
Firsts · 1967
Did you know that Siaka Stevens' victory in the March 1967 election was one of the first times an African opposition party ousted a ruling party at the ballot box, but a military coup stopped him within hours of being sworn in?
Society · 1968
Did you know that in April 1968 a group of non-commissioned officers mounted the so-called Sergeants' Revolt, overthrowing the military junta and handing power back to Siaka Stevens?
Society · 1971
Did you know that Sierra Leone dropped the British monarch as head of state and became a republic on 19 April 1971, with Siaka Stevens as its first executive president?
Records · 1972
Did you know that the Star of Sierra Leone, found near Koidu on 14 February 1972, weighed 968.9 carats, making it one of the largest gem-quality diamonds ever discovered?
Economy · 1974
Did you know that Sierra Leone shut down its entire national railway, a 2 ft 6 in narrow-gauge line once running hundreds of kilometres inland, with the last trains running in 1974?
Society · 1978
Did you know that a 1978 constitution made Siaka Stevens' All People's Congress the only legal party, turning Sierra Leone into a one-party state that lasted until 1991?
Society · 1991
Did you know that the civil war began on 23 March 1991 when the Revolutionary United Front, led by former army corporal and photographer Foday Sankoh, crossed into Sierra Leone from Liberia?
Records · 1992
Did you know that Captain Valentine Strasser seized power in a 1992 coup aged just 25, making him the youngest head of state in the world at the time?
Society · 1999
Did you know that in January 1999 rebel forces launched Operation No Living Thing on Freetown, killing thousands of civilians before Nigerian-led ECOMOG troops drove them out of the capital?
Records · 2000
Did you know that in September 2000 British special forces carried out Operation Barras to rescue soldiers held by the West Side Boys militia, one of the most daring hostage rescues in modern British military history?
Records · 1999-2005
Did you know that the United Nations Mission in Sierra Leone, UNAMSIL, grew to about 17,500 troops, briefly making it the largest UN peacekeeping operation in the world?
Society · 2002
Did you know that President Ahmad Tejan Kabbah formally declared the civil war over on 18 January 2002, after a conflict that killed an estimated 50,000 people and displaced over two million?
Firsts · 2012
Did you know that former Liberian president Charles Taylor, convicted in 2012 by the Special Court for Sierra Leone, was the first former head of state convicted by an international court since the Nuremberg trials?
Records · 2014-2016
Did you know that the West African Ebola epidemic infected about 14,000 people in Sierra Leone, more than in any other country, and killed nearly 4,000 there before it was declared over?
Nature · 2017
Did you know that on 14 August 2017 a mudslide from Sugar Loaf Mountain buried part of Regent near Freetown after heavy rain, killing more than 1,100 people in one of Africa's deadliest floods?
Economy · 2022
Did you know that in July 2022 Sierra Leone redenominated its currency by removing three zeros, so 1,000 old leones became one new leone, and notes now carry national heroes like Bai Bureh?
Heritage · 2023
Did you know that Freetown's centuries-old Cotton Tree, a symbol of the city where freed settlers are said to have prayed on arrival in 1792, was toppled by a heavy storm on 24 May 2023?
Firsts · 2024
Did you know that Sierra Leone began a two-year term on the UN Security Council in January 2024, its first seat there in more than fifty years, since its previous term in 1970 to 1971?
Society · 2024
Did you know that in April 2024 President Julius Maada Bio declared a national emergency over kush, a cheap synthetic drug blend so feared that some addicts were reported digging up graves for human bones?
Society · 2024
Did you know that in July 2024 Sierra Leone banned child marriage, setting penalties of up to 15 years in prison for anyone who marries, or helps marry, a person under 18?
Society · 2025
Did you know that President Julius Maada Bio was elected chair of the Economic Community of West African States in June 2025, taking over from Nigeria's Bola Tinubu?
Myth or fact ·
Did you know that there is no proof lions ever roamed the Freetown peninsula, and one popular theory says the Lion Mountains name came from the roaring thunder or the lion-like shape of its hills?
Nature ·
Did you know that Tiwai Island, a 12-square-kilometre island in the Moa River, is home to 11 primate species, one of the highest densities of primate diversity anywhere in the world?
Nature ·
Did you know that the shy, endangered pygmy hippopotamus, only about a tenth the weight of a common hippo, survives in Sierra Leone's forests, including the Gola Rainforest and around Tiwai Island?
Nature ·
Did you know that Outamba-Kilimi National Park in northern Sierra Leone shelters chimpanzees, forest elephants and pygmy hippos in a mix of savanna and forest near the Guinea border?
Geography ·
Did you know that Mount Bintumani, also called Loma Mansa, rises to about 1,945 metres in the Loma Mountains, making it the highest point in Sierra Leone and one of the highest in West Africa?
Records ·
Did you know that Freetown's harbour, in the estuary of the Sierra Leone River, is often described as the largest natural harbour in Africa and one of the largest in the world?
Nature ·
Did you know that the Gola Rainforest National Park protects one of the largest remaining blocks of Upper Guinean lowland forest, home to rare birds such as the white-necked rockfowl?
Language ·
Did you know that Krio, an English-based creole with words from Yoruba, Portuguese and other languages, is the mother tongue of only a small minority yet is understood by the vast majority of Sierra Leoneans?
Language ·
Did you know that Sierra Leoneans affectionately call their country Salone, its name in Krio, a word heard everywhere from music to football chants?
Culture ·
Did you know that the Sowei helmet masks of the women's Sande society are among the very few African masks traditionally worn and danced by women rather than men?
Culture ·
Did you know that cassava leaves, pounded and stewed with palm oil, fish or meat and served over rice, are so central to Sierra Leonean cooking that many people feel a meal without rice is not a real meal?
Society ·
Did you know that the Mende and Temne peoples each make up roughly a third of Sierra Leone's population, while about 16 other ethnic groups share the rest of the country?
Geography ·
Did you know that the Banana Islands, a small chain just off the tip of the Freetown peninsula, are home to fishing villages and the ruins of old colonial-era buildings, reachable only by boat?
Society ·
Did you know that the Poro society for men and the Sande society for women are secret initiation societies that for centuries have taught law, customs and adulthood across much of Sierra Leone?