Sierra Leone's story spans more than four thousand years, from early farming communities to a country that now hosts regional summits and a UNESCO World Heritage Site.
The Bullom, Gola, Kissi, Baga and Nalou are among the oldest inhabitants of the coast and its hinterland. Encyclopaedia Africana traces the Mende, now the largest group, to Mande-speaking Mani invaders of the mid-1500s. Bullom craftsmen carved ivories to Portuguese order; examples are now held in museums in Italy and Denmark.
The name dates to the Portuguese voyages of the 1460s. Britannica credits navigator Pedro de Sintra, the first European to map Freetown harbour. A Portuguese account quoted in the 2011 Golden Jubilee book says de Sintra chose the name because the land looked rough and wild. Popular explanations instead point to thunder like a lion's roar or hills shaped like a crouching lion. Historian Magbaily Fyle argues the name may predate 1462.
From about 1670 English companies ran a slave-trading fort on Bunce Island. Captives were shipped largely to North America, many to South Carolina and Georgia, where rice-farming skills were in demand. This is the root of the documented connection with the Gullah people. Bunce Island became the country's first protected historic site in 1948 and is on UNESCO's Tentative List.
The trade involved African as well as European participants. The 1988 heroes book, for example, notes that Loko ruler Gumbu Smart began as a slave-buying agent for Bunce Island traders.
Sources 115
See it:Bunce Island
c. 1540
Mani (Mane) invasions; Temne tradition remembers Farma Tami as founder of their kingdoms
c. 1670
English slave-trading fort established on Bunce Island
Sources 7
See it:Bunce Island
1727
Futa Jallon jihad; expansion of Islam in the region
Sources 122
In 1787 freed Black people from London settled on land obtained from Temne rulers, forming a self-governing "Province of Freedom". Encyclopaedia Africana argues that economics, not humanitarianism alone, lay behind the scheme. The settlement was destroyed in 1789. On 11 March 1792, Black Loyalists from Nova Scotia founded Freetown. Tradition holds that they gave thanks under the Cotton Tree, which fell in a storm in 2023.
1787
Province of Freedom founded on land obtained from Temne rulers
Sources 1
1788
Koya regent Nemgbana signs the treaty granting land to the settlement
Sources 115
1789
First settlement destroyed and abandoned
1792
Nova Scotian settlers found Freetown (11 March)
1794
French warships attack Freetown; Pa Demba shelters settlers
Sources 115
1800
Jamaican Maroons arrive
Sources 1
From 1808 Freetown was a Crown Colony and base for the Royal Navy squadron that intercepted slave ships. More than 40,000 Liberated Africans had been settled by 1850, many of Yoruba origin. Their blending with the settler communities produced the Krio people, whose language is now spoken across the country.
Fourah Bay College (1827), the Grammar School (1845) and Annie Walsh (1849) drew students from across West Africa. Inland, Foday Tarawaly's Islamic university at Gbinle taught several hundred students before its destruction in 1875.
See it:Old Fourah Bay College
1808
Crown Colony declared; Liberated Africans (Recaptives) begin to arrive
1827
Fourah Bay Institution (later College) founded
See it:Old Fourah Bay College
1839–1842
Amistad revolt; US Supreme Court frees the captives (1841); return home (1842)
1845
CMS (now Sierra Leone) Grammar School founded
Sources 23
1849
Annie Walsh Memorial School for girls founded
Sources 24
1863
John Ezzidio becomes the first African elected to the Legislative Council
1876
Fourah Bay College affiliated with Durham University
See it:Old Fourah Bay College
1884
Samori Toure's forces invade the north; fall of Falaba
1896
British Protectorate declared over the interior
1898
Hut Tax War; Bai Bureh leads resistance in the north
1906
Bo School opens
1908
Railway reaches Pendembu
1921
Kikakui script for the Mende language developed
1924
New constitution returns elected members; chiefs sit in the Legislative Council
1930
Diamonds discovered in Kono; mining begins 1932
Sources 1
1934
Asadata Dafora's dance-opera Kykunkor opens in New York
1939
Gunners' protest at Murray Town; Wallace-Johnson detained
Sources 56
1939–1945
Second World War; Sierra Leonean troops serve in Burma
Sources 122
1951
New constitution unifies government; Protectorate representatives in the majority
1957
Sierra Leone Museum opens (10 December)
Sources 148
See it:Sierra Leone National Museum
Sierra Leone became independent on 27 April 1961 and a republic on 19 April 1971. The decades after independence included a military takeover in 1967, a one-party state from 1978, and the hosting of the 1980 OAU summit. Accounts of this period differ sharply by source and political perspective.
1961
Independence (27 April); Sir Milton Margai first Prime Minister
1964
Sir Albert Margai becomes Prime Minister
Sources 122
1967
General election followed by military takeover
1968
Civilian rule restored; Siaka Stevens Prime Minister
1971
Sierra Leone becomes a republic (19 April)
1978
One-party state under the All People's Congress
1980
Freetown hosts the Organisation of African Unity summit (1–4 July)
1985
Joseph Saidu Momoh becomes President
Sources 122
The civil war of 1991–2002 was the country's darkest modern chapter. Its aftermath produced the Special Court for Sierra Leone, the world's first hybrid tribunal created by UN treaty with a member state. From May 2014 Ebola caused 8,704 confirmed cases in Sierra Leone and 3,589 deaths, among them 221 health workers. WHO declared the outbreak over on 7 November 2015.
1991–2002
Civil war
1996
Multi-party elections held during the war
2002
Special Court for Sierra Leone established
2010
Free Health Care Initiative launched (27 April)
Sources 95
2012
Special Court convicts former Liberian President Charles Taylor
2014
Ebola outbreak; Kenema team's genome study published
2015
WHO declares the Ebola outbreak over (7 November)
Sources 44
The Gola-Tiwai Complex became the country's first World Heritage Site in July 2025. Sierra Leone served on the UN Security Council in 2024–2025 and President Bio chaired ECOWAS from June 2025 to July 2026.
See it:Tiwai Island Wildlife SanctuaryGola Rainforest National Park
2023
Freetown's Cotton Tree falls in a storm (24 May)
Sources 12
See it:Sierra Leone National Museum
2024
Sierra Leone presides over the UN Security Council in August
Sources 51
2025
President Bio elected ECOWAS Chair (June); Gola-Tiwai Complex inscribed as first UNESCO World Heritage Site (13 July)
See it:Tiwai Island Wildlife SanctuaryGola Rainforest National Park
2026
Sierra Leone hosts the ECOWAS mid-year summit (12–19 July)
