Chapter 01 · c. 1390 – c. 1700
Kongo & the Savanna Kingdoms
Before any colony there were sophisticated African states — the kingdom of Kongo near the Atlantic, and the Luba, Lunda and Kuba kingdoms of the southern savanna.
On the lower Congo River the kingdom of Kongo coalesced around 1390 under Lukeni lua Nimi, ruling from its capital Mbanza Kongo. When the Portuguese navigator Diogo Cão reached the coast in 1483, Kongo was a centralised state of provinces and royal officials. Its king Nzinga a Nkuwu accepted baptism in 1491, taking the name João I; his son Nzinga Mbemba ruled from about 1509 as Afonso I, making Kongo a Christian kingdom and exchanging ambassadors and letters with Lisbon.
Those same Portuguese ties bound Kongo into the Atlantic slave trade. Afonso, who had welcomed missionaries and literacy, protested in correspondence to João III of Portugal in 1526 against traders who seized free subjects, though slaving continued to expand. Kongo's power waned through the 17th century and was broken at the Battle of Mbwila on 29 October 1665, where Portuguese forces killed King António I and the kingdom fragmented into rival factions.
Deeper inland, on the grasslands and lakes of the Upemba Depression, the Luba empire took shape, and from its political traditions grew the Lunda empire under the title Mwaant Yaav (Mwata Yamvo). Between the Sankuru and Kasai rivers, Shyaam a-Mbul a Ngoong founded the Bushong dynasty of the Kuba kingdom around 1625, a state celebrated for its art, woven raffia and ordered court. These savanna kingdoms organised trade, tribute and craft across the heart of the continent long before any European set foot there.
“Each day the traders are kidnapping our people — children of this country, sons of our nobles and vassals.”
— King Afonso I to João III of Portugal, 1526 (as commonly cited)
Turning points
- c. 1390Formation
- 1491Religion
- 1526Peoples & Migration
Afonso I protests the slave trade
King Afonso I (Nzinga Mbemba) writes to João III of Portugal complaining that traders are illegally enslaving his subjects, even as the Atlantic trade expands.
See the data - c. 1625Formation
- 29 Oct 1665War & Rupture
Battle of Mbwila breaks Kongo
Portuguese forces defeat Kongo and kill King António I at Mbwila (Ambuila); the kingdom splinters into rival factions and a long civil war.
See the data
Figures of the era
Chapter sources: Kongo (historical kingdom, Africa), Kingdom of Kongo, Afonso I, king of Kongo kingdom, Kuba Kingdom, Kingdoms of the Savanna: the Luba and Lunda Empires, Lunda empire
Chapter 02 · c. 1700 – 1885
The Slave Trades & the Scramble
Two slaving systems — Atlantic to the west, Swahili-Arab to the east — bled the Congo basin, even as European explorers mapped the river for empire.
For two centuries the western kingdoms fed captives into the transatlantic trade that carried millions of Central Africans across the ocean, much of it through ports south of the Congo mouth. The trade enriched coastal middlemen, fractured inland polities and depopulated whole districts long before any colonial flag was raised over the interior.
From the east a second system reached deep into the basin in the 19th century. Swahili-Arab traders from the Indian Ocean coast pushed up the caravan routes for ivory and slaves; the most powerful, Hamad bin Muhammad — known as Tippu Tip — built a personal domain centred on Kasongo in the Maniema country, leading armed expeditions of thousands and raiding the Manyema region so relentlessly that it became notorious to outsiders as a slaving 'El Dorado'.
It was into this world that the Welsh-American journalist Henry Morton Stanley descended the Congo River from 1874 to 1877, the first European to trace its course to the sea. His reports drew the attention of King Leopold II of Belgium, who hired Stanley from 1879 to establish stations and sign treaties with local rulers — the groundwork for a colonial claim that the European powers would soon sanction.
Turning points
- 18th centuryPeoples & Migration
Atlantic slave trade at its height
Central African captives are funnelled in vast numbers into the transatlantic trade, hollowing out communities across the lower Congo.
See the data - c. 1860s–1880sPeoples & Migration
Tippu Tip's eastern slaving state
Swahili-Arab trader Tippu Tip builds a domain around Kasongo in Maniema, raiding the eastern Congo for ivory and slaves.
See the data - 1877Colonisation
Stanley descends the Congo River
Henry Morton Stanley completes the first European traverse of the Congo from interior to the Atlantic, mapping the basin for would-be colonisers.
See the data - 1879–1884Colonisation
Leopold hires Stanley for the Congo
King Leopold II commissions Stanley to build stations and obtain treaties from local chiefs, laying the basis for a private colonial claim.
See the data
Figures of the era
Chapter sources: Kingdom of Kongo, Congo Free State (1885–1908), Tippu Tib, African slave trader and explorer, Tippu Tip, Congo Free State
Chapter 03 · 1885 – 1908
The Congo Free State
Recognised at the Berlin Conference as King Leopold II's personal possession, the Congo Free State became one of history's most lethal colonial regimes.
At the Berlin Conference of 1884–85 the European powers recognised Leopold II's claim to the Congo basin, and in 1885 he proclaimed the Congo Free State — not a Belgian colony but the king's own private domain, some 2.3 million square kilometres ruled in his personal name. Its purpose was extraction: first ivory, then, as world demand surged in the 1890s, wild rubber.
To force villagers to gather rubber, the state's armed force, the Force Publique, imposed quotas backed by terror. Hostages were taken, villages burned, and soldiers required to account for ammunition by bringing back severed human hands — a practice that made mutilation a notorious emblem of the regime. Death came through violence, famine, overwork and disease; estimates of the resulting population loss range widely, from over a million to figures as high as ten million, and remain debated by historians.
The abuses were exposed to the world by the British consul Roger Casement, whose 1904 report documented the killing and mutilation first-hand, and by the journalist E. D. Morel, whose Congo Reform Association mounted an international campaign. Under mounting pressure the Belgian parliament took the territory out of Leopold's hands, annexing it as the Belgian Congo on 15 November 1908.
“The abuses were exposed by Roger Casement's report and E. D. Morel's reform campaign.”
— On the Congo Reform movement
Turning points
- 1885Colonisation
Congo Free State proclaimed
Following the Berlin Conference, Leopold II establishes the Congo Free State as his personal possession, recognised by the European powers.
See the data - 1890sCatastrophe
The rubber regime and the Force Publique
Monopoly decrees and rubber quotas, enforced by the Force Publique through hostage-taking and mutilation, drive a system of forced labour and mass death.
See the data - 1904Politics & Power
- 15 Nov 1908Colonisation
Belgium annexes the Belgian Congo
Under international pressure, Belgium takes the territory from Leopold II, ending the Free State and creating the Belgian Congo colony.
See the data
Figures of the era
Chapter sources: Congo Free State, Congo Free State (1885–1908), Leopold II, king of the Belgians, Casement Report (1904)
Chapter 04 · 1908 – 1965
Belgian Congo & Independence
Half a century of Belgian rule ended abruptly in 1960 — and independence opened onto secession, mutiny and the murder of the first prime minister.
Belgian rule combined paternalist administration, Catholic missions and the mining of vast copper and mineral wealth in Katanga with rigid racial controls and almost no preparation of Congolese for self-government. Pressure for independence built rapidly in the late 1950s, and Belgium, eager to avoid a colonial war, agreed to a swift handover.
On 30 June 1960 the Belgian Congo became independent, with Patrice Lumumba as prime minister and Joseph Kasa-Vubu as president. Within days the new state unravelled: the army mutinied on 5 July, and on 11 July the mineral-rich province of Katanga declared secession under Moïse Tshombe with Belgian backing. Belgium sent troops and the United Nations deployed a peacekeeping force into what became known as the Congo Crisis.
The crisis consumed Lumumba. Dismissed by Kasa-Vubu in September 1960 amid a power struggle, sidelined by Colonel Joseph-Désiré Mobutu's intervention, he was captured and handed to his Katangan enemies, who killed him on 17 January 1961 — an act in which Belgian officers were present and Western intelligence interest is widely documented. After years of turmoil, Mobutu seized full power in a coup in 1965.
Turning points
- 1908Colonisation
Belgian Congo established
The colony is administered by Belgium for half a century, its economy built on Katangan copper and other minerals.
See the data - 30 June 1960Independence
Independence from Belgium
The Congo becomes independent with Lumumba as prime minister and Kasa-Vubu as president.
See the data - 11 July 1960War & Rupture
Katanga secedes; the Congo Crisis
An army mutiny and Moïse Tshombe's Belgian-backed secession of Katanga plunge the new state into crisis and UN intervention.
See the data - 17 Jan 1961Politics & Power
Assassination of Lumumba
Captured and transferred to Katanga, Patrice Lumumba is killed; Belgian officers were present and foreign involvement is widely documented.
- 1965Politics & Power
Figures of the era
Patrice Lumumba1925–1961
First Prime Minister of independent Congo
Nationalist leader and first prime minister; dismissed amid the Congo Crisis and assassinated in January 1961, he became a symbol of African independence.
Chapter sources: Congo Free State, Congo, Democratic Republic of the, Patrice Lumumba, Mobutu Sese Seko, president of Zaire, Mobutu Sese Seko
Chapter 05 · 1965 – 1997
Mobutu's Zaire
For more than three decades Mobutu Sese Seko ruled a country he renamed Zaire — a single-party state of pageantry, plunder and Cold War patronage.
Having seized power in 1965, Mobutu consolidated a one-party state. In 1971, under a doctrine of 'authenticité' that purged colonial names and symbols, he renamed the country Zaire and himself Mobutu Sese Seko. Backed by Western powers as a Cold War ally, he ruled through a cult of personality while the state's mineral wealth was siphoned into private hands — a system later dubbed kleptocracy.
Decades of corruption hollowed out the economy and infrastructure even as Mobutu projected absolute authority. By the 1990s his grip was weakening, and the 1994 Rwandan genocide spilled over the eastern border as more than a million Hutu refugees, including génocidaires, crowded into the Kivu provinces, destabilising the region.
In 1996 a rebellion led by the veteran guerrilla Laurent-Désiré Kabila, backed by Rwanda and Uganda, swept across the country in the First Congo War. Mobutu, gravely ill, fled in May 1997 and died in exile in Morocco that September. Kabila took the capital, declared himself president and restored the name Democratic Republic of the Congo.
Turning points
- 1971Politics & Power
- 1994Peoples & Migration
Rwandan refugee crisis in the Kivus
The Rwandan genocide drives over a million refugees into eastern Zaire, destabilising the Kivu provinces.
See the data - 1996–1997War & Rupture
First Congo War
A Rwanda- and Uganda-backed rebellion under Laurent-Désiré Kabila advances across the country against the collapsing Mobutu regime.
See the data - May 1997Politics & Power
Figures of the era
Chapter sources: Mobutu Sese Seko, president of Zaire, Mobutu Sese Seko, Second Congo War, Kabila, Laurent-Désiré (1939–2001)
Chapter 06 · 1998 – present
Africa's World War & After
A second, far deadlier war drew in nine nations, and despite peace agreements the eastern Kivus have never known lasting calm.
In August 1998 Laurent-Désiré Kabila turned on his Rwandan and Ugandan backers, igniting the Second Congo War. Drawing in some nine African states — Angola, Zimbabwe and Namibia among Kabila's allies, Rwanda and Uganda backing the rebels — and dozens of armed groups, it became known as 'Africa's World War.' It was the deadliest conflict since the Second World War, with widely cited estimates of several million deaths, most from disease and starvation rather than combat.
Kabila was assassinated in Kinshasa on 16 January 2001 and succeeded by his son Joseph Kabila, who pursued peace. A series of agreements in 2002 — at Sun City and Pretoria — and a transitional government brought the war to a formal close in 2003, and the country adopted a new constitution and held elections in 2006.
Peace on paper did not reach the east. The mineral-rich Kivu provinces remained a battleground for armed groups, including the M23 rebellion, which seized Goma in 2012 and, after re-emerging in 2021, again captured the city in early 2025 amid Rwandan involvement and a renewed humanitarian catastrophe. The struggle over the eastern Congo's people and resources remains unresolved.
“It became known as 'Africa's World War' — nine nations and dozens of armed groups, the deadliest conflict since 1945.”
— On the Second Congo War
Turning points
- Aug 1998War & Rupture
Second Congo War begins
Kabila breaks with Rwanda and Uganda; nine nations and many militias are drawn into 'Africa's World War,' the deadliest conflict since 1945.
See the data - 16 Jan 2001Politics & Power
- 2003Politics & Power
Peace agreements end the war
The 2002 Sun City and Pretoria accords and a transitional government formally end the Second Congo War in 2003.
- 2012War & Rupture
M23 rebellion seizes Goma
The M23 rebel movement briefly captures Goma in North Kivu before being pushed back; conflict festers across the east.
See the data - 2025War & Rupture
M23 retakes Goma
After re-emerging in 2021, M23 — with Rwandan backing — captures Goma again in early 2025, deepening the humanitarian crisis.
See the data
Figures of the era
Chapter sources: Second Congo War, Kabila, Laurent-Désiré (1939–2001), The M23 Offensive: Elusive Peace in the Great Lakes