The Kingdom of Kongo formed in central Africa through the union of local chiefdoms. It became a centralized state that later engaged directly with Portugal.
Portuguese navigator Diogo Cão sailed to the estuary of the Congo River and made first contact with the Kingdom of Kongo. He left a stone marker, or padrão, claiming the discovery for Portugal and exchanged envoys with the manikongo. This opened decades of diplomatic and commercial ties between the two kingdoms.
The Kongo ruler Nzinga a Nkuwu accepted Catholic baptism and took the name João I, encouraged by Portuguese missionaries and his own interest in the alliance. Christianity became the court religion, and Kongo adopted Portuguese titles, dress, and literacy alongside its own traditions. The kingdom dealt with Portugal for a time as a nominal equal rather than a subject.
King Afonso I of Kongo, a Christian convert who ruled from about 1509 to 1543, wrote surviving letters to the Portuguese crown complaining that traders were depopulating his kingdom by seizing and buying people for enslavement. He asked Portugal to restrict the trade to what he could control, but the demand for captives kept growing. His letters are among the earliest African documents describing the destructive reach of the Atlantic slave trade.
Over the sixteenth and seventeenth centuries the Portuguese-run trade through Kongo and neighboring Ndongo shipped large numbers of enslaved Central Africans across the Atlantic, many to Brazil. The traffic fed on and worsened local wars and raiding as rival states captured people to sell. Historians regard West Central Africa as one of the single largest sources of captives in the entire Atlantic slave trade.
Portuguese forces from Angola defeated and killed the Kongo king António I at the Battle of Mbwila, also called Ambuila. The defeat shattered central authority and touched off long civil wars among rival branches of the royal house. The once-unified kingdom fragmented, and its weakening left the wider region more exposed to the slave trade.
In the early and middle nineteenth century the Maa-speaking pastoralists dominated the grasslands from Laikipia south to the Ngong Hills and into what is now northern Tanzania. Their herds, mobility and warrior bands made them the strongest military force in the region. Neighbouring farming peoples paid tribute, traded on Maasai terms or kept out of the plains altogether.
Maasai men passed together through named age-sets, spending years as ilmurran, the warriors often called moran. Newly circumcised youths became junior warriors and lived apart in a manyatta, a warrior settlement without the usual thorn stockade, where they trained, raided and guarded the herds. Only later did they marry and become elders, bound throughout by loyalty to their age-mates.
The eunoto was the great ceremony that ended a group's years as senior warriors and moved them toward elderhood. Hundreds of moran gathered, shaved their long ochred hair and took on new responsibilities. The rite renewed the age-set cycle that organised Maasai military and social life.
The oloibon, often written laibon, was a ritual expert and prophet whose blessings and divination were sought before raids and in times of trouble. Supeet was remembered as a powerful oloibon of the Kisongo section who helped bind scattered Maasai groups behind common war aims. His standing showed how spiritual authority reinforced Maasai military strength.
The Maasai believed their god had given them all cattle, and raiding neighbours for herds was treated as recovery, not theft. Their reach let them tax caravans, demand hongo tribute and hold farming peoples in check. Early European travellers routinely paid to pass and described the Maasai as the terror of the caravan routes.
A 21-carat diamond, later called the Eureka, was found by a boy named Erasmus Jacobs near the Orange River. It was the first diamond confirmed in South Africa and set off initial prospecting along the river.
An 83.5-carat diamond found near the Orange River was sold for a large sum and publicized in London, proving South Africa held commercially significant diamond deposits. The find triggered a much larger wave of prospectors heading inland.
Mbatian, son of Supeet, became the most famous Maasai oloibon and was said to have foreseen the coming of iron caravans, cattle disease and strangers from the sea. He guided the Maasai in war and ritual during the last decades of their independence. His death near 1890 was followed by a bitter split between his sons over who inherited his authority.
Diamonds were discovered on a small hill on the De Beers brothers' farm, prompting thousands of diggers to converge on the site within months. The hill was mined so intensively by individual claim holders that it became the open pit later known as the Big Hole.
The British Crown annexed the diamond-bearing territory around Kimberley, overriding competing Boer republic and African claims to the land. Colonial administration of the diggings followed, formalizing British control over the diamond fields.
Cecil Rhodes, an 18-year-old English immigrant, arrived at the diamond diggings and began working claims and running water pumps for other miners. His early profits in Kimberley became the financial base for his later mining and political career.
The mining camp at Colesberg Kopje and the surrounding diggings were officially renamed Kimberley, after the British Colonial Secretary, the Earl of Kimberley. By this point the diggings held thousands of small claims worked by both white diggers and black laborers.
Barney Barnato, a London-born entrepreneur, arrived at the Kimberley diggings and began buying up claims. He would become Cecil Rhodes's chief rival in the consolidation of the diamond fields over the following fifteen years.
As individual claims were dug deeper, cave-ins, flooding, and the cost of hauling ore up steep pit walls made small-scale digging increasingly unworkable. Wealthier operators began buying out adjoining claims to consolidate mining operations, a process that accelerated through the 1870s and 1880s.
The explorer Henry Morton Stanley, hired by Belgium's King Leopold II, spent years mapping the Congo River and signing treaties with hundreds of local chiefs. Many of the chiefs did not understand that the marked papers ceded sovereignty and land. These treaties became the legal basis Leopold used to claim the vast territory as his own.
Barney Barnato merged several claims he had acquired into the Kimberley Central Diamond Mining Company, consolidating his hold on the Kimberley mine. It became the dominant company at the Kimberley pit and Rhodes's main obstacle to full monopoly.
Cecil Rhodes and Charles Rudd formed the De Beers Mining Company, named after the De Beers brothers whose farm sat atop the diamond deposits, to consolidate claims at the De Beers mine. It became the vehicle Rhodes used over the next eight years to buy out rival claim holders.
European powers met in Berlin to set rules for claiming African territory, formalizing the Scramble for Africa. The conference recognized Leopold II's International Association of the Congo, clearing the way for his control of the Congo basin. African rulers and peoples had no representation in the partition of their continent.
Colonial authorities and mine owners in Griqualand West extended pass-law requirements to control the movement of African laborers to and from the diamond mines. Workers had to carry documents identifying their employer and permission to travel, restricting their freedom outside the compounds.
King Leopold II of Belgium established the Congo Free State as his private possession, ruled by him personally rather than by the Belgian government. It was one of the only cases in history of a colony held as the private property of one man. Leopold cast the project publicly as humanitarian and anti-slavery while building it to extract wealth.
Kimberley mine owners, led by De Beers, began confining African laborers to closed compounds for the duration of their contracts, ostensibly to stop diamond theft. Workers lived in fenced barracks, were searched on exit, and had their movements controlled, a system that became the template for compound labor across southern African mining.
Killings, forced labor, famine, and disease caused a massive population collapse under Leopold's rule. A widely cited figure, popularized by the author Adam Hochschild, holds that the population fell by around ten million, but the number is contested and estimates among historians range widely from roughly one million to fifteen million. No reliable census existed, so any death toll is a scholarly estimate rather than a settled count.
Leopold's regime built the Force Publique, an armed force of African conscripts led by European officers, to enforce control and collect quotas. It functioned as both an army and an instrument of forced labor, punishing villages that failed to meet rubber demands. Its brutality became central to the terror of the Free State years.
Cecil Rhodes secured backing from the London merchant bank N M Rothschild & Sons to fund his takeover bid for Barnato's Kimberley Central company. The financing gave Rhodes the capital needed to outbid Barnato for the remaining independent claims.
After a bidding war, Cecil Rhodes and Barney Barnato merged their rival companies into De Beers Consolidated Mines, giving the new company control of nearly all diamond production in the Kimberley area. The merger effectively ended the era of open competition among individual claim holders and created a near-total monopoly over South African diamond output.
Cecil Rhodes obtained a royal charter for his British South Africa Company, empowering it to acquire mineral rights, administer territory, and raise its own police force north of the Limpopo River. Rhodes used profits and prestige from De Beers to finance and legitimize the charter, extending the diamond fortune into a vehicle for territorial expansion.
Troops of the South African Com- pany, which was granted a royal charter in 1889
A syndicate of London diamond merchants agreed with De Beers to buy its entire output at fixed prices and manage the pace at which diamonds reached the market. The arrangement let De Beers regulate global supply without directly running the retail trade, an early version of the single-channel marketing system it would use for the next century.
Having made a diamond and gold fortune, Cecil Rhodes becomes Prime Minister of the Cape Colony. He uses the office to expand British territory northward and to shape policy in the interests of the mining industry.
The Pioneer Column, organized and funded by Rhodes's British South Africa Company, occupied Mashonaland and raised the company flag at Fort Salisbury. The occupation, financed substantially by De Beers-derived wealth, opened the territory that would become Southern Rhodesia to settler colonization.
Surging world demand for rubber, spurred by the pneumatic tyre and other industries, turned the Congo's wild rubber vines into a source of immense profit. Leopold's administration imposed harsh collection quotas on villagers, backed by armed agents and concession companies. The rubber system generated fortunes in Europe while devastating Congolese communities.
British South Africa Company forces fought the Ndebele kingdom, using Maxim guns to defeat larger Ndebele forces and seize their land and cattle. A second uprising in 1896-97 was likewise suppressed, cementing company and settler control over what became Southern Rhodesia.
A raiding party led by Leander Starr Jameson, backed by Cecil Rhodes, invaded the Transvaal in a failed attempt to trigger an Uitlander uprising against the Boer government of Paul Kruger. The raid collapsed within days and its failure forced Rhodes to resign as Cape Prime Minister. The episode badly damaged British-Boer relations and is widely seen as a key step toward the Second Anglo-Boer War.
To force rubber quotas, agents and Force Publique soldiers held families hostage, burned villages, and killed those who fell short. Soldiers were made to prove they had not wasted ammunition by bringing back severed human hands, a practice widely documented by missionaries and photographers of the period. Mutilation, starvation, and killing became defining features of the Free State.
Scottish mining engineer Robert Williams, an associate of Cecil Rhodes, formed Tanganyika Concessions Limited to prospect for minerals in Central Africa. His teams confirmed the vast copper deposits of Katanga in the south of the Congo. British capital and expertise, routed through this company, would become a founding partner in the exploitation of the Congo's copper belt.
Boer forces besieged Kimberley for 124 days, trapping Cecil Rhodes inside the town along with the De Beers mining operations. De Beers workshops were converted to produce an armored train and an artillery piece, nicknamed Long Cecil, for the town's defense until British forces relieved the siege in February 1900.
The shipping clerk E.D. Morel noticed that ships returning from the Congo carried rubber and ivory but sent back mainly guns and chains, evidence that the trade rested on forced labor rather than commerce. He launched a journalistic and public campaign to expose the system. His work made the Congo a major international scandal.
The British recruited Maasai warriors as levies and irregulars in punitive expeditions against neighbours such as the Nandi, Kamba and others who resisted colonial control. In return for cattle taken as loot, Maasai moran did much of the fighting and raiding on Britain's behalf. Their martial tradition was thus used up in the service of the power that would soon dispossess them.
British investor William Knox D'Arcy won a sweeping concession from the Persian shah to search for and sell oil across most of the country for sixty years, in exchange for a small cash sum and a modest share of profits. When oil was struck in 1908, the terms proved hugely favorable to foreign owners. The lopsided deal became a template for how great powers secured Middle Eastern oil on the cheap.
The railway from Mombasa reached Lake Victoria at Kisumu in 1901, cutting through the cool, fertile highlands on the way. Hansard later put the total cost at about GBP 5.5 million, more than double the early GBP 2.24 million estimate and offer. Officials looked for white farmers to settle along the line and produce export freight that would make the line pay. That search for settlers, more than any plan for African development, set the highlands on the path to becoming a white preserve.
As colonial rule took hold the British backed the oloibon Olonana, also called Lenana, as the leading Maasai authority and treated him as a paramount chief. The Maasai had no single ruler, and Olonana's real power over the many sections was limited. Whether he could truly speak or sign for all the Maasai is disputed, but the British found it convenient to deal through him.
The 1902 Crown Lands Ordinance let the administration sell freehold and grant long leases of land it treated as vacant Crown land, including large areas Africans used for grazing and shifting cultivation. It gave the first legal footing for handing the highlands to European settlers. Because African land use was often seasonal and communal, officials could label occupied land empty and alienate it.
Cecil Rhodes died at his seaside cottage near Cape Town at age 48. His will established the Rhodes Scholarship and left instructions reflecting his belief in British imperial expansion, and his death left De Beers under the control of the board he had built.
Hugh Cholmondeley, the third Baron Delamere, took up a huge lease near Njoro in 1903 and poured his fortune into experiments with sheep, cattle, and wheat until he made settler farming work. He became the leader and spokesman of a small aristocratic settler class that pictured the highlands as a white man's country. Delamere set the tone of settler politics, demanding cheap African labour, low taxes, and a permanent racial hold on the land.
British consul Roger Casement traveled through the Congo gathering testimony and evidence, then published an official report detailing systematic mutilation, killing, and forced labor. The report gave the reform campaign hard documentation from a government source. It intensified pressure on Leopold and Belgium to answer for the regime.
In 1904 the administration pressed the Maasai, through the laibon Lenana, to sign an agreement giving up the central Rift Valley grasslands and move into two reserves, one on the Laikipia plateau to the north and one to the south around Ngong and Loita. The treaty said the arrangement would last as long as the Maasai existed. Historians dispute how freely Lenana acted and whether he spoke for all the Maasai sections, but the effect was to clear prime pasture for white ranchers.
Morel and Casement founded the Congo Reform Association, which grew into one of the first mass international human rights campaigns. It used mass meetings, pamphlets, and atrocity photographs to build public outrage across Britain, the United States, and Europe. The pressure it generated helped force the transfer of the Congo from Leopold to the Belgian state.
In August 1904 an agreement signed for the Maasai by Olonana moved them off the central Rift and into two reserves, a northern one on Laikipia and a southern one near the Tanganyika border, linked by a stock corridor. The document promised the Maasai the reserves for as long as they existed as a people. It also opened the fertile central highlands to European settlement.
The mining giant Union Miniere du Haut-Katanga was created to work the copper of southern Congo, owned jointly by Belgium's Societe Generale and the British-backed Tanganyika Concessions of Robert Williams. It became one of the most powerful companies in Africa, running an enclave with its own mines, railways, and towns. Its profits flowed to shareholders in Brussels and London while Congolese workers labored under a strict color bar for low pay.
The mining company Union Minière du Haut-Katanga was created to exploit the vast copper deposits of the Katanga region, with Belgian and British capital. It became one of the most powerful companies in Africa and a pillar of the colonial economy. Its control of Katanga's mineral wealth would later shape the politics of independence and secession.
Around 1906 the Colonial Secretary Lord Elgin gave settlers what became known as the Elgin Pledge, an assurance that in the highlands land grants would in practice go to Europeans and not to Indians. It was never a formal law, but it hardened into policy and gave the settlers the racial land monopoly they wanted. From this the fertile central highlands took shape as the exclusive White Highlands.
After an international outcry over the atrocities of King Leopold II's personal rule, Belgium took the Congo Free State from him and made it the Belgian Congo. The reformers who had condemned Leopold's forced-labor rubber regime did not return the land to Congolese control. Instead the same ground, now under Belgian and allied European capital, was opened to industrial mining, a shift documented economic historians describe as reform in name followed by extraction in fact.
Under international pressure over the atrocities documented by Casement, Morel, and missionaries, the Belgian parliament took control of the Congo from Leopold II, ending his personal rule and renaming the territory the Belgian Congo. Forced labor practices continued under state administration in modified form, particularly during the rubber and later mineral booms. Leopold himself was never tried for the abuses committed under his authority.
After the international outcry over the rubber terror, the Belgian parliament takes control of the Congo from Leopold II, ending his personal rule and renaming the territory the Belgian Congo. Forced-labour practices continue under state administration in modified form, particularly during the rubber and later mineral booms. Leopold himself is never tried for the abuses committed under his authority.
Belgium runs the Congo as a paternalist state built on a partnership of the colonial administration, the Catholic Church, and large companies. Africans are provided basic schooling and health care aimed at producing obedient workers, but are barred from higher education, political rights, and senior jobs by an informal colour bar. The system keeps Congolese people subordinate while presenting itself as benevolent guardianship.
Belgium ran the Congo as a paternalist state built on a partnership of the colonial administration, the Catholic Church, and large companies. Africans were provided basic schooling and health care aimed at producing obedient workers, but were barred from higher education, political rights, and senior jobs by an informal colour bar. The system kept Congolese people subordinate while presenting itself as benevolent guardianship.
Along the southern edge of Kikuyu country, near Kiambu and Limuru, settlers took some of the most fertile ridges, land the Kikuyu insisted they had bought or cleared, not abandoned. Officials often argued the ground had been emptied by the famine and smallpox of the 1890s, but the Kikuyu held that it had owners who were still alive. These contested ridges, remembered as stolen land, became the seedbed of Kikuyu grievance and later of Mau Mau.
Union Miniere poured its first Katangan copper at the Star of the Congo mine near the new town of Elisabethville, today Lubumbashi. The colony was reshaped around the mines, drawing in migrant labor and building a railway to ship metal out to the coast. Katanga became one of the world's great copper producers, its output feeding European and American industry rather than local development.
A second agreement in 1911 forced the northern Maasai to leave Laikipia and crowd into an enlarged southern reserve, breaking the promise that the earlier reserves would last as long as the Maasai existed. The move was pushed through so that settlers could take the well-watered Laikipia grasslands for ranches. Driving herds south cost the Maasai many more cattle along the way.
A second agreement in 1911 forced the northern Maasai off the Laikipia plateau, which settlers coveted, and crowded them into an enlarged southern reserve. Some Maasai leaders challenged the move in court in 1912 to 1913, arguing the treaty had been broken, but the case was thrown out on the ground that a dispute between the Crown and its protected subjects was not one the courts could hear. The move stripped the Maasai of about half their remaining land and remains a live grievance.
A group of Maasai led by Ol le Njogo went to court in 1913 to challenge the second move and hold Britain to the 1904 promise. The court ruled that the agreement was a treaty between the Crown and the Maasai and so lay outside its jurisdiction, and the case was lost on appeal. The judgment left the Maasai with no legal remedy for the loss of Laikipia.
The Anglo-Persian Oil Company, formed out of the D'Arcy concession, gained a controlling investment from the British government at the urging of Winston Churchill, who wanted secure fuel for the Royal Navy. This tied Britain's military and strategic interests directly to Persian oil. The company, later Anglo-Iranian and then BP, would keep the lion's share of oil profits for decades.
The 1915 ordinance stretched leases to 999 years and redefined Crown land so broadly that it included land occupied by Africans, who were reduced to tenants at the will of the Crown. Africans could now be moved off land their families had farmed for generations with no right to stay. This law, more than any other, turned the highlands into secure white freehold and left Africans legally landless on their own soil.
The Native Registration Ordinance of 1915, put into full effect around 1919 to 1920, required every African man to carry a kipande, a fingerprinted identity and labour pass held in a metal container worn round the neck. Police enforced it, and a man found without his kipande could be arrested, fined, or jailed. The system controlled African movement and labour and became one of the most hated symbols of colonial rule.
The colonial state imposes compulsory cultivation of crops such as cotton and drafts men to work in mines, on plantations, and on infrastructure. Villagers face quotas, taxes payable only in labour or cash, and harsh discipline enforced by officials. Forced and coerced labour remains a defining feature of the Belgian Congo well into the twentieth century.
The colonial state imposed compulsory cultivation of crops such as cotton and drafted men to work in mines, on plantations, and on infrastructure. Villagers faced quotas, taxes payable only in labor or cash, and harsh discipline enforced by officials. Forced and coerced labor remained a defining feature of the Belgian Congo well into the twentieth century.
As the reserves filled and land ran short, many Kikuyu moved onto settler farms as squatters, a word that translated the Kikuyu ahoi, tenants living on another's land. In return for their labour they were let farm a patch and graze a few animals, and for a time they built real homes and herds in the Rift Valley. This bargain, land to use in exchange for work, was the foundation of the squatter economy and later the heart of the quarrel over it.
In 1919 Governor Edward Northey issued circulars pressing African chiefs and officials to round up men to work on settler farms, a thinly veiled system of forced labour that stirred protest even in Britain. Taxes payable only in cash, together with land shortage in the reserves, pushed men out to earn wages on white farms whether they wished to or not. The reserves were designed to work as reservoirs of cheap labour, crowded enough that people had to leave to survive.
After the First World War the government threw open highland land to British ex-servicemen through a lottery scheme, hoping to plant a larger, loyal white population. Thousands of new farms were carved out, many on land recently used by Africans, and the European population climbed sharply. The scheme deepened the alienation of African land and sharply increased the demand for squatter and wage labour to work the new farms.
When East Africa became the crown colony of Kenya in 1920, the white settlers won elected seats on the Legislative Council and pressed for something close to self-rule under white control. Their campaign against Indian claims to equality prompted the 1923 Devonshire White Paper, which declared that African interests should be paramount, a principle London rarely enforced. In practice the settlers held outsized political weight for decades, using it to guard the Highlands and the labour supply.
After the discovery of the Shinkolobwe deposit around 1915, Union Miniere began producing radium from its unusually rich uranium ore in the early 1920s. For years the Congo mine dominated the world radium market, a valuable and dangerous trade run entirely for Belgian and shareholder profit. The same ore body would soon matter far more for a new reason, its uranium content.
Union Minière began working the Shinkolobwe deposit in Katanga, which held some of the richest uranium ore ever found. At first the mine was valued mainly for its radium. The site's uranium would soon take on strategic importance far beyond mining.
A circle of wealthy, aristocratic settlers gathered in the Wanjohi Valley below the Aberdares in the 1920s and 1930s and earned a reputation for drink, drugs, and swapping spouses. The Happy Valley set became a byword in Britain for colonial decadence, the joke being to ask whether one was married or lived in Kenya. Their idle luxury, waited on by African servants and squatters, was the glittering face of a settler order built on cheap African labour and stolen land.
Laws on resident native labourers, first passed in 1918 and tightened in 1925, redefined the squatter not as a tenant with rights but as a labourer who owed a set number of days' work for the right to live on a farm. The change quietly converted squatters from semi-independent farmers into a bound workforce. It gave settlers the legal tools they would later use to strip squatter rights away altogether.
Through the 1920s and 1930s the colonial government alienated large blocks of Kipsigis and neighbouring Kalenjin grazing and farming land in the Kericho and Sotik highlands. The land was handed to European settlers as part of the White Highlands, where Africans could not own farms. Communities that had grazed and farmed the highlands were pushed into smaller reserves.
Settler farms built an export economy of coffee, tea, sisal, pyrethrum, wheat, and dairy, worked by African hands and shipped out on the railway. To protect their prices and profits, settlers had the state bar Africans from growing coffee and other lucrative crops well into the colonial period. The rule kept the most profitable farming a white monopoly and forced Africans to sell their labour rather than compete.
On the alienated highlands, companies such as Brooke Bond and James Finlay laid out large tea plantations from the mid 1920s onward. Brooke Bond later passed to Unilever, and the estates grew into one of the biggest tea complexes in Africa. They were worked by resident labourers and by migrants drawn from the surrounding districts.
Western oil companies drew a red line on a map around the former Ottoman lands and agreed not to compete inside it except together, through the Iraq Petroleum Company. British, French, Dutch, and American firms split the region's oil among themselves. Local rulers and peoples had no seat at the table where their resources were divided.
Oppenheimer created the Diamond Corporation to buy up diamond production from De Beers and outside producers and control the flow of stones to the market during the Depression-era collapse in demand. It became the direct forerunner of the Central Selling Organisation.
The colonial government passes the Native Lands Trust Ordinance, which sets aside the African reserves and declares them held in trust for their inhabitants. On paper it promised that reserve land could not be taken from Africans for the benefit of others. The North Kavirondo reserve, home to the Luhya of western Kenya, was one of the areas it covered.
Prospectors confirm workable gold deposits near Kakamega, inside the North Kavirondo reserve that had just been set aside for the Luhya. Word spread quickly through the colony and beyond. The find sat on land that the 1930 ordinance had supposedly placed off limits to outsiders.
The Kenya Land Commission under Sir Morris Carter sat from 1932 and reported in 1934 on African land claims, above all the Kikuyu demand for the lost highland ridges. It granted the Kikuyu a modest area of extra land and a cash payment but rejected the bulk of their claims and set fixed boundaries for the native reserves. Crucially it endorsed the White Highlands as a permanent European preserve, dashing hopes that the theft might be undone by law.
A gold rush drew hundreds of European prospectors and miners into the Kakamega area during 1932 and 1933. Mining camps, a township, and claims spread across land that belonged to Luhya families. The rush was small by world standards but large enough to override the promise that the reserve was protected.
When gold was found in the reserve, the colonial government amended the Native Lands Trust Ordinance in 1932 to excise the goldfields and admit European prospectors and miners. The amendment let mining go ahead on land that had been declared inviolable only two years earlier. It showed that the legal protection of native land held only until Europeans wanted what was under it.
Standard Oil of California secured the concession to explore Saudi Arabia's oil, and struck commercial quantities in 1938. The venture grew into the Arabian American Oil Company, or Aramco, jointly owned by American firms. For its early decades Aramco set output and prices and kept most of the profit, with the Saudi state receiving royalties on terms the company controlled.
Luhya families whose land fell inside the mining area were moved aside so prospecting and mining could go ahead. Compensation was small and set by the administration, not by the people who lost the use of their land. The reserve had been redrawn around European interests, and its residents had little say in the outcome.
De Beers formally organized its marketing arm as the Central Selling Organisation, a single channel through which the great majority of the world's rough diamonds were sold to a limited list of approved dealers. The CSO let De Beers stockpile diamonds and restrict supply to keep prices high, a cartel arrangement that lasted for most of the twentieth century.
Under the Laibons Removal Ordinance of 1934, the colonial government deported the Talai, the Kipsigis ruling clan whose orkoiik led resistance, away from the highlands to Gwassi in South Nyanza. The removal broke community leadership and cleared people from land wanted for settlement and tea. The Talai remained in detention and exile for decades.
The tea estates depended on a large workforce of pluckers and field hands, housed on the estates or drawn in from nearby reserves. Wages were low and the labour was tied to the plantation. This pattern of estate labour on land taken from local communities carried on well past the end of colonial rule.
The Resident Labourers Ordinance of 1937, enforced from 1940, let district councils in the Highlands slash the land and livestock squatters were allowed and raise their labour days sharply. Squatter cattle were culled, cultivation plots cut, and families who had built up herds and farms saw them destroyed. This deliberate squeezing of squatter life in the 1930s and 1940s turned a settled tenantry into an angry, dispossessed mass and fed the land grievance behind Mau Mau.
The Kenya (Highlands) Order in Council, made in 1938 and in force from 1939, at last gave the White Highlands the force of statute. It fixed the boundary of the reserved area and set up a Highlands Board controlling who could hold land there, formally barring Africans and Indians alike. The color bar on the best farmland was now written into imperial law, and it stood until the eve of independence.
Edgar Sengier, a director of Union Miniere, foresaw war and had roughly 1,200 tons of high-grade Shinkolobwe uranium ore shipped to New York, where it sat in a warehouse on Staten Island. In 1942 he sold it to the United States Army for the secret atomic bomb program. The ore was far richer than American or Canadian sources, and its origin in a Belgian colony was kept quiet.
In January 1941 Josslyn Hay, the Earl of Erroll and a leading Happy Valley figure, was found shot dead in his car outside Nairobi. Sir Jock Delves Broughton, whose wife had been Erroll's lover, was tried for the murder and acquitted, and the killing was never solved. The scandal exposed the tangled affairs of the settler elite to the world at the height of the war and became the most famous story of Happy Valley excess.
Squatters moved to the crowded Olenguruone settlement from 1941 refused the government's farming rules and bound themselves together with a mass oath of unity, an early form of the Mau Mau oath. Their long resistance ended in eviction and prosecution around 1950, but the practice of oathing whole communities spread from there into central Kenya. Many historians trace the militant, land-centred core of Mau Mau back to the squatters of Olenguruone.
Union Minière director Edgar Sengier arranged for Congolese uranium, some already stockpiled in New York, to be sold to the United States for the Manhattan Project. Ore from Shinkolobwe supplied much of the uranium used in the first nuclear weapons, including the bomb dropped on Hiroshima. The Congo thus played a hidden but central role in the birth of the nuclear age, with little benefit to the colony.
Historians of the Manhattan Project record that much of the uranium for the first atomic bombs, including the weapon dropped on Hiroshima, came from the Shinkolobwe mine in the Belgian Congo. The colony supplied a decisive strategic material for the nuclear age. It received almost nothing in return, and Congolese people had no say in how their ground was used.
A small educated urban class known as the évolués grew after the Second World War, mostly clerks, teachers, and skilled workers trained in mission and colonial schools. They pressed for equal treatment and an end to the colour bar, at first seeking reform rather than independence. Their frustration with colonial limits helped seed the nationalist movement.
In the late 1940s settlers and the state pushed tens of thousands of Kikuyu squatters off the Highlands farms and back to reserves that had no room for them. Uprooted, landless, and bitter, many carried their grievance into Nairobi's slums and into the movement that became Mau Mau. The squatter question, land and a living taken away, was one of the direct roads to the Emergency of 1952.
After the Second World War the government ran a fresh European settlement scheme, recruiting British ex-servicemen and others to take up highland farms and enlarge the white population. It came just as pressure on African land was at its worst and settlers were pushing squatters off the same estates. The mismatch, more whites arriving on the land while Africans were being evicted from it, sharpened the grievance that soon exploded as Mau Mau.
De Beers hired the advertising agency N.W. Ayer, and copywriter Frances Gerety coined the slogan 'A Diamond Is Forever' for a campaign built around linking diamonds inseparably to engagement and marriage. The campaign is widely credited with creating the modern expectation that an engagement requires a diamond ring, particularly in the United States, turning a stockpiled commodity into an object of manufactured cultural necessity.
The National Party's election victory formalized apartheid, extending pass laws, labor compounds, and racial job restrictions that had originated in the Kimberley and Witwatersrand mines into comprehensive national policy. Historians have described the mining industry's migrant-labor and compound system as a working model that apartheid legislation later generalized across the economy.
Following Venezuela's 1948 move to split oil profits evenly, Saudi Arabia reached a 50/50 profit-sharing deal with Aramco in 1950. Producing states finally claimed half the take, a large gain over old royalty terms, though companies still controlled production and marketing. The shift showed that concession terms were negotiable, and it encouraged other governments to demand a bigger share.
Iran's parliament votes to nationalize the British-owned Anglo-Iranian Oil Company, and Mohammad Mossadegh becomes prime minister on a wave of popular support. Britain, which had drawn huge profits from Iranian oil, responded with an embargo and a naval blockade. The standoff set the stage for the covert campaign that would remove him two years later.
The fighters who took to the forests in 1952 called their cause ithaka na wiyathi, land and freedom, and named their movement the Land and Freedom Army. Their central demand was the return of the stolen highlands and an end to the settler monopoly on the best soil. More than a fight over flags or votes, Mau Mau was at its core a revolt of the landless and the evicted against the men who held the land.
British and American intelligence organized a coup that overthrew Prime Minister Mossadegh and restored the power of Shah Mohammad Reza Pahlavi. Western oil access was preserved, and a consortium of foreign companies returned to Iranian oil on favorable terms. The CIA later acknowledged its role, and the coup stands as a defining example of covert action taken to protect resource interests.
The Swynnerton Plan of 1954 remade African farming by consolidating scattered customary holdings, issuing individual title, opening cash crops, and tying land to credit. It created the title deed as the normal proof of ownership for ordinary Kenyans. But it happened during the Emergency, when chiefs, Home Guards and loyalist committees could control claims while many Mau Mau supporters were detained, absent or silenced. It built a new African landowning class and a new landless class at the same time.
At the Lancaster House talks the British insisted that the Highlands change hands by purchase on a willing-buyer, willing-seller basis, with settlers paid market value and their property rights written into the independence constitution. This ruled out giving the land back to those it had been taken from. The dispossessed would have to buy their land again, and only those with money, credit, or connections could take part, a point stressed in accounts of the loyalist land inheritance.
Days after Congolese independence, the mineral-rich province of Katanga declared itself a separate state under Moise Tshombe, backed by Belgian troops and, many accounts hold, by Union Miniere, which kept paying taxes to the breakaway regime. The secession helped trigger the crisis that ended with the killing of Prime Minister Patrice Lumumba. It is a stark case of foreign mining interests shaping the politics of a newly free country.
Iran, Iraq, Kuwait, Saudi Arabia, and Venezuela founded the Organization of the Petroleum Exporting Countries to coordinate policy and stop foreign firms from setting prices at will. It marked producing states organizing to claim more of the value of their own oil. Over the following years OPEC helped shift control of production and pricing away from the Western majors.
By 1959-60 the formal racial barrier that had reserved the Highlands for whites was coming down, and Africans and Indians could in principle buy land there. That was a real end to the legal white preserve. But it was not restitution: buyers still needed money, credit, an available seller and board approval. The land question moved from open race law into market purchase, title, debt and political access.
From 1962 the Million Acre Settlement Scheme bought up around a million acres of settler land and resettled tens of thousands of African families on it, funded largely by British loans, the World Bank, and the Commonwealth Development Corporation. It moved real land to real farmers and eased some pressure, but it worked by purchase, not restitution, so newly independent Kenya took on the debt of buying back stolen land. Many of the poorest and the ex-fighters could not qualify and were left out.
To buy larger former settler estates, Africans pooled money in land-buying companies and cooperatives. The model could settle real families, but it favoured people who could raise capital, manage paperwork, reach ministers, and control company committees. Politicians, senior civil servants, chiefs, Home Guard veterans, businessmen and other connected figures used these vehicles to accumulate prime land while many ordinary members received small parcels, delayed allocations or nothing.
Economist Hossein Mahdavy, studying Iran, described a "rentier state" that lives on income from selling raw materials to foreigners rather than taxing its own people. He argued this income, called rent, weakens the link between a government and its citizens because rulers need oil buyers more than they need voters. The idea became a core tool for explaining why resource-rich states often stay unaccountable.
Following independence from Portugal, Angola descended into a civil war between the MPLA government and UNITA rebels that lasted, with interruptions, until 2002. UNITA financed much of its war effort by controlling alluvial diamond fields in the northeast and selling stones into international markets, including through De Beers buying channels for part of the conflict.
After independence, the land question was normalized rather than solved. Huge estates and valuable parcels ended up with founding families, senior officials, chiefs, Home Guard networks, land-buying company bosses and politically connected companies. The poor were left with small plots, debt, informal settlement, squatting or migration. Later inquiries documented illegal public-land grabbing, but they did not reopen the whole private-title settlement created by conquest, Swynnerton and willing-buyer purchase.
The Economist used the phrase "Dutch disease" to describe how the Netherlands' natural gas boom pushed up its currency and hurt its other exports and manufacturing. The pattern generalizes: a sudden rush of resource money can hollow out the rest of an economy, leaving a country more dependent on the one commodity. Economists still use the term for oil and mineral states that fail to build anything beyond the mine or well.
The Revolutionary United Front launched an insurgency against the Sierra Leonean government, beginning an eleven-year civil war marked by mass amputations and the use of child soldiers. The RUF financed its campaign chiefly by seizing diamond-mining areas and smuggling rough diamonds out through neighboring Liberia.
General Sani Abacha ruled Nigeria from 1993 to 1998 and used the state's oil revenue to enrich himself and his circle, with stolen sums later estimated in the billions of dollars and traced to foreign bank accounts. His rule shows how oil rents can fund a repressive dictatorship rather than the people who live above the oil. Years later, governments in Switzerland and elsewhere returned recovered Abacha funds to Nigeria.
Geographer Richard Auty introduced the phrase "resource curse" in his book on mineral economies, arguing that countries rich in minerals often grew more slowly than countries without them. The claim was counterintuitive: wealth in the ground seemed to correlate with poverty above it. Later scholars debated how strong and how universal the effect really is, but the label stuck.
Economists Jeffrey Sachs and Andrew Warner published a widely cited study finding that economies with high ratios of natural-resource exports tended to grow more slowly from 1970 to 1990. Their work gave the resource curse a statistical backbone and set off decades of research. Critics later argued the result depended on how you measure resource dependence and that good institutions can break the pattern.
The Abacha regime hanged writer Ken Saro-Wiwa and eight other Ogoni activists after a trial widely condemned as rigged. They had led protests against oil pollution in the Niger Delta and the role of Royal Dutch Shell, the main operator there. Shell denied responsibility for the deaths but in 2009 paid a 15.5 million dollar settlement in a US lawsuit without admitting liability, in a case that came to symbolize oil, repression, and pollution in the delta.
Political scientist Terry Lynn Karl's book "The Paradox of Plenty" studied oil states like Venezuela and Nigeria and argued that oil booms build weak, dependent institutions. She showed how petro-states hollow out their tax systems, bloat their bureaucracies, and become fragile when prices fall. The "paradox of plenty" phrase became shorthand for wealth that produces dysfunction rather than development.
The UN Security Council adopted Resolution 1173, prohibiting the direct or indirect import of diamonds from Angola not certified by the government, in an effort to cut off UNITA's main source of funding. It was one of the first international measures explicitly targeting conflict diamonds.
The advocacy group Global Witness published 'A Rough Trade,' documenting how diamonds mined in rebel-held Angola were being sold through De Beers's buying network and financing UNITA's war effort. The report was widely credited with putting the term 'conflict diamonds' into public use and pressuring the industry toward reform.
A UN Security Council panel chaired by Canadian ambassador Robert Fowler published a report naming specific governments, arms dealers, and diamond buyers involved in evading sanctions to keep UNITA supplied with weapons in exchange for diamonds. The report increased international pressure for an industry-wide certification system for rough diamonds.
Southern African diamond-producing states, industry representatives, and NGOs met in Kimberley to negotiate a certification scheme that would keep conflict diamonds out of the legitimate trade. The talks, named after the town, led to a series of negotiations completed over the following two years.
Facing antitrust pressure and competition from independent producers such as Russia's Alrosa and new Canadian mines, De Beers began dismantling the Central Selling Organisation's stockpile-and-control system in favor of a 'Supplier of Choice' model selling to a smaller set of approved clients at set prices. The change ended De Beers's decades-long role as the buyer of last resort for the entire world diamond supply.
As Angola's long civil war ended in 2002, the government financed itself with offshore oil through the state company Sonangol, while the UNITA rebels had run on diamonds. The International Monetary Fund and campaigners reported large gaps between oil income and the public accounts, with billions unexplained. Angola became a case where oil wealth flowed to a narrow elite and foreign partners while much of the population stayed poor.
The Kimberley Process Certification Scheme took effect, requiring participating countries to certify shipments of rough diamonds as conflict-free and to trade only with other participating members. Critics have since argued the scheme's narrow definition of 'conflict diamond' and weak enforcement have let it miss diamonds tied to state violence and labor abuse outside civil-war contexts.
Economists Paul Collier and Anke Hoeffler published influential research arguing that the ability to loot resources, more than political grievance, predicted the risk of civil war. Their finding suggested that valuable, lootable commodities like diamonds and oil can fund and prolong armed conflict. Other scholars pushed back, saying grievance and history still matter, but the study framed how the world talks about "conflict resources."
De Beers pleaded guilty to a US federal charge of conspiring to fix prices of industrial diamonds and paid a 10 million dollar fine, ending decades of the company avoiding direct business in the United States to escape antitrust prosecution. The settlement let De Beers finally operate openly in the US retail market.
After the disputed election of December 2007, the Rift Valley erupted in violence in which more than a thousand people were killed and hundreds of thousands driven from their homes. Much of the bloodshed turned on land, as communities that saw Kikuyu settlement of the former Highlands as unjust attacked those they viewed as outsiders. Analysts widely trace the roots of the killing to the unresolved land question left by colonial alienation and the flawed independence settlement.
Political scientist Michael Ross's book "The Oil Curse" gathered evidence that oil-rich governments tend to be more authoritarian, more secretive, more prone to conflict, and worse for women's economic role. His argument was that oil money lets rulers avoid taxing and answering to citizens, and pay for security forces instead. It made the case that resource rents often fund repression rather than schools, roads, or hospitals.
A high-level panel led by former South African president Thabo Mbeki reported to the African Union that the continent was losing on the order of 50 billion US dollars a year in illicit financial flows. The panel found that much of it came from the extractive sector through trade mis-invoicing and transfer pricing, where multinationals shift profits out of producing countries. The figure is an estimate and has been debated, but it framed how tax dodging drains mineral and oil wealth from the Global South.
Descendants of the Kipsigis and Talai organised claims for reparations over the colonial taking of their land in the Kericho highlands. The claims targeted the British government and the tea multinationals that still hold the estates. Community groups put the number of affected people in the hundreds of thousands.
In 2019 United Nations human rights experts, through the OHCHR, wrote to the British government over the historical alienation of Kipsigis and Talai land for the tea estates. The letter raised the forced evictions, the killings and abuses, and the long failure to make amends. It gave the community's case an international hearing.
The resource curse: how the South fed the Northshares 27 event(s): Robert Williams founds Tanganyika Concessions, The D'Arcy concession opens Persia's oil, Union Miniere du Haut-Katanga is founded
The Congo: from Leopold to the resource warsshares 26 event(s): Founding of the Kingdom of Kongo, Diogo Cão reaches the mouth of the Congo River, Conversion of the manikongo and baptism as João I
The extraction of western Kenya: gold, tea, and labourshares 11 event(s): Kipsigis and Kalenjin grazing land is alienated for European settlement, Brooke Bond and James Finlay plant the great Kericho tea estates, The Native Lands Trust Ordinance promises the reserves are inviolable