Expanded History
History of Sierra Leone
From antiquity to the modern era — the historical eras, key events, and narrative that shaped Sierra Leone.
Overview
In 1787 the British helped 400 freed slaves from the United States, Nova Scotia, and Great Britain return to Sierra Leone to settle in what they called the "Province of Freedom." Disease and hostility from the indigenous people nearly eliminated the first group of returnees. This settlement was joined by other groups of freed slaves and soon became known as Freetown. In 1792, Freetown became one of Britain’s first colonies in West Africa.
Thousands of slaves were returned to or liberated in Freetown. Most chose to remain in Sierra Leone. These returned Africans--or Krio as they came to be called--were from all areas of Africa. Cut off from their homes and traditions by the experience of slavery, they assimilated some aspects of British styles of life and built a flourishing trade on the West African coast.
In the early 19th century, Freetown served as the residence of the British governor who also ruled the Gold Coast (now Ghana) and the Gambia settlements. Sierra Leone served as the educational center of British West Africa as well. Fourah Bay College, established in 1827, rapidly became a magnet for English-speaking Africans on the West Coast. For more than a century, it was the only European-style university in western Sub-Saharan Africa.
The colonial history of Sierra Leone was not placid. The indigenous people mounted several unsuccessful revolts against British rule and Krio domination. Most of the 20th century history of the colony was peaceful, however, and independence was achieved without violence. The 1951 constitution provided a framework for decolonization. Local ministerial responsibility was introduced in 1953, when Sir Milton Margai was appointed Chief Minister. He became Prime Minister after successful completion of constitutional talks in London in 1960. Independence came in April 1961, and Sierra Leone opted for a parliamentary system within the British Commonwealth. Sir Milton’s Sierra Leone Peoples Party (SLPP) led the country to independence and the first general election under universal adult franchise in May 1962. Upon Sir Milton’s death in 1964, his half-brother, Sir Albert Margai, succeeded him as Prime Minister.
In closely contested elections in March 1967, the All Peoples Congress (APC) won a plurality of the parliamentary seats. Accordingly, the Governor General (representing the British Monarch) declared Siaka Stevens--APC leader and Mayor of Freetown--as the new Prime Minister. Within a few hours, Stevens and Margai were placed under house arrest by Brigadier David Lansana, the Commander of the Republic of Sierra Leone Military Forces (RSLMF), on grounds that the determination of office should await the election of the tribal representatives to the house. Another group of officers soon staged another coup, only to be later ousted in a third coup, the "sergeants’ revolt," and Stevens at last, in April 1968, assumed the office of Prime Minister under the restored constitution. Siaka Stevens remained as head of state until 1985. Under his rule, in 1978, the constitution was amended and all political parties, other than the ruling APC, were banned.
In August 1985, the APC named military commander Maj. Gen. Joseph Saidu Momoh, Steven’s own choice, as the party candidate to succeed Stevens. Momoh was elected President in a one-party referendum on October 1, 1985. In October 1991 Momoh had the constitution amended once again, re-establishing a multi-party system. Under Momoh, APC rule was increasingly marked by abuses of power. Earlier in 1991, in March, a small band of men who called themselves the Revolutionary United Front (RUF) under the leadership of a former-corporal, Foday Sankoh, began to attack villages in eastern Sierra Leone on the Liberian border. Fighting continued in the ensuing months, with the RUF gaining control of the diamond mines in the Kono district and pushing the Sierra Leone army pack towards Freetown. On April 29, 1992, a group of young military officers, led by Capt. Valentine Strasser, launched a military coup, which sent Momoh into exile in Guinea and established the National Provisional Ruling Council (NPRC) as the ruling authority in Sierra Leone.
The NPRC proved to be nearly as ineffectual as the Momoh government in repelling the RUF. More and more country fell to RUF fighters, so that by 1995 they held much of the countryside and were on the doorsteps of Freetown. To retrieve the situation, the NPRC hired several hundred mercenaries from the private firm Executive Outcomes. Within a month they
Historical Eras
The major periods of {country}’s history at a glance.
Pre-Colonial Era
1000 – 1787
Diverse indigenous peoples, including the Temne, Mende, and Limba, established complex societies across the Sierra Leone peninsula and interior. Portuguese explorer Pedro de Sintra named the region 'Serra Lyoa' in 1462, initiating European contact and eventually the transatlantic slave trade, which profoundly disrupted local communities. By the 1700s, Sierra Leone was a significant source of enslaved people prized for their rice-farming expertise in the American South.
Freetown Settlement
1787 – 1808
In 1787, British abolitionists sponsored the resettlement of roughly 400 freed Black loyalists, formerly enslaved people, and London's 'Black Poor' in a self-styled 'Province of Freedom' on the Sierra Leone peninsula. Disease, hostile relations with the Temne, and administrative failures devastated early settlers, yet the colony persisted, bolstered by waves of liberated enslaved Africans and Nova Scotian Black loyalists. The settlement coalesced into Freetown, becoming one of Britain's first footholds in West Africa.
British Crown Colony
1808 – 1961
Freetown became a formal Crown Colony in 1808, serving as a strategic base for the Royal Navy's anti-slavery patrols and a hub of British West African administration. Thousands of recaptured Africans, collectively known as Krio, were liberated here, forming a distinctive creolized culture and a professional class that dominated regional commerce and education. Fourah Bay College, founded in 1827, made Sierra Leone the intellectual center of British West Africa for over a century, while the interior remained a separate Protectorate from 1896.
Independence & Early Republic
1961 – 1991
Sierra Leone achieved independence peacefully on 27 April 1961 under Prime Minister Sir Milton Margai and his Sierra Leone People's Party, adopting a parliamentary system within the Commonwealth. The post-independence decades were turbulent: a succession of coups and counter-coups culminated in Siaka Stevens's long authoritarian rule from 1968, during which a one-party state was formalized under the All People's Congress in 1978. By the late 1980s, endemic corruption and economic mismanagement under President Joseph Momoh had severely weakened state institutions.
Civil War
1991 – 2002
In March 1991 the Revolutionary United Front (RUF), backed by Liberian warlord Charles Taylor, launched an insurgency that plunged Sierra Leone into a decade of catastrophic violence marked by mass amputations, child soldier recruitment, and the displacement of more than two million people. A 1997 military coup by the Armed Forces Revolutionary Council briefly allied the junta with the RUF before a Nigerian-led ECOWAS force restored elected President Ahmad Tejan Kabbah in 1998. UN peacekeepers, the Lomé Peace Accord of 1999, and ultimately British military intervention in 2000 broke the RUF's power; the war was formally declared over in January 2002.
Post-War Reconstruction
2002 – present
Following the 2002 elections, Sierra Leone embarked on a fragile recovery supported by UNAMSIL peacekeepers, the Special Court for Sierra Leone, and international development aid. The Truth and Reconciliation Commission documented wartime abuses while successive governments—alternating between the SLPP and APC—worked to rebuild infrastructure, strengthen democratic institutions, and develop the country's substantial diamond, iron ore, and rutile resources. Persistent challenges including the 2014–2016 Ebola crisis and high youth unemployment continue to test the resilience of the post-conflict state.
Timeline Preview
The first 7 key events. View the full chronology on the timeline page.
1787
The British establish a refuge for freed slaves.
The British establish a refuge for freed slaves in a small portion of their West African territory now known as Sierra Leone. An area called Freetown receives 400 freedmen.
1808
Freetown settlement becomes crown colony.
Freetown settlement becomes crown colony.
1961
Sierra Leone becomes independent.
Sierra Leone becomes independent.
1991
Start of civil war.
Start of civil war.
1997
The Commonwealth suspends Sierra Leone.
The Commonwealth suspends Sierra Leone.
1999
A ceasefire is greeted with cautious optimism in Freetown.
A ceasefire is greeted with cautious optimism in Freetown amid hopes that eight years of civil war may soon be over.
2002
War declared over.
War declared over. UN mission says disarmament of 45,000 fighters is complete. Government, UN agree to set up war crimes court.

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