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In the period from 1885 to 1908, many well-documented atrocities were perpetrated in the Congo Free State (today the Democratic Republic of the Congo) which, at the time, was a colony under the personal rule of King Leopold II of Belgium. These atrocities were sometimes collectively referred to by European contemporaries as the "Congo Horrors", and were particularly associated with the labour policies used to collect natural rubber for export. Together with epidemic disease, famine, and a falling birth rate caused by these disruptions, the atrocities contributed to a sharp decline in the Congolese population. The magnitude of the population fall over the period is disputed, but it is thought to be between one and fifteen million people.
At the Berlin Conference of 1884–85, the European powers allocated the Congo Basin region to a private charitable organisation run by Leopold II, who had long held ambitions for colonial expansion. The territory under Leopold's control exceeded 2,600,000 km2 (1,000,000 sq mi) and, amid financial problems, was ruled by a tiny cadre of white administrators drawn from across Europe. Initially, the colony proved unprofitable and insufficient, with the state always close to bankruptcy. The boom in demand for natural rubber, which was abundant in the territory, created a radical shift in the 1890s—to facilitate the extraction and export of rubber, all "uninhabited" land in the Congo was nationalised, with the majority distributed to private companies as concessions. Some was kept by the state. Between 1891 and 1906, the companies were allowed to do whatever they wished with almost no judicial interference, the result being that forced labour and violent coercion were used to collect the rubber cheaply and maximise profit. A native paramilitary army, the Force Publique, was also created to enforce the labour policies. Individual workers who refused to participate in rubber collection could be killed and entire villages razed. Individual white administrators were also free to indulge their own sadism.
Despite these atrocities, the main cause of the population decline was disease. A number of pandemics, notably African sleeping sickness, smallpox, swine influenza, and amoebic dysentery, ravaged indigenous populations. In 1901 alone it was estimated that 500,000 Congolese had died from sleeping sickness. Disease, famine and violence combined to reduce the birth-rate while excess deaths rose.
The severing of workers' hands achieved particular international notoriety. These were sometimes cut off by Force Publique soldiers who were made to account for every shot they fired by bringing back the hands of their victims. These details were recorded by Christian missionaries working in the Congo and caused public outrage when they were made known to the public in the United Kingdom, Belgium, the United States and elsewhere. An international campaign against the Congo Free State began in 1890 and reached its apogee after 1900 under the leadership of the British activist E. D. Morel. In 1908, as a result of international pressure, the Belgian government annexed the Congo Free State to form the Belgian Congo, and ended many of the systems responsible for the abuses. The size of the population decline during the period is the subject of extensive historiographical debate, and there is an open debate as to whether the atrocities constitute genocide. Neither the Belgian monarchy nor the Belgian state have ever apologised for the atrocities.
- 1 Background
- 2 Atrocities
- 3 Population decline
- 4 Investigation and international awareness
- 5 Historiography and the term "genocide"
- 6 See also
- 7 Notes and references
- 8 Bibliography
- 9 Further reading
Establishment of the Congo Free State
Even before his accession to the throne of Belgium in 1865, the future king Leopold II began lobbying leading Belgian politicians to create a colonial empire in the Far East or Africa, which would expand and enhance Belgian prestige. Politically, however, colonisation was unpopular in Belgium as it was perceived as a risky and expensive gamble with no obvious benefit to the country and his many attempts to persuade politicians met with little success.
Determined to look for a colony for himself and inspired by recent reports from central Africa, Leopold began patronising a number of leading explorers, including Henry Morton Stanley. Leopold established the International African Association (Association internationale africaine), a "charitable" organisation to oversee the exploration and surveying of a territory based around the Congo River, with the stated goal of bringing humanitarian assistance and civilisation to the natives. In the Berlin Conference of 1884–85, European leaders officially recognised Leopold's control over the 2,350,000 km2 (910,000 sq mi) of the notionally-independent Congo Free State on the grounds that it would be a free trade area and buffer state between British and French spheres of influence. In the Free State, Leopold exercised total personal control without much delegation to subordinates. African chiefs played an important role in the administration by implementing government orders within their communities. Throughout much of its existence, however, Free State presence in the territory that it claimed was patchy, with its few officials concentrated in a number of small and widely dispersed "stations" which controlled only small amounts of hinterland. In 1900, there were just 3,000 white people in the Congo, of whom only half were Belgian. The colony was perpetually short of administrative staff and officials, who numbered between 700 and 1,500 during the period.
In the early years of the colony, much of the administration's attention was focused on consolidating its control by fighting the African peoples on the colony's periphery who resisted colonial rule. These included the tribes around the Kwango river, in the south-west, and the Uélé in the north-east. Some of the violence of the period can be attributed to African groups using colonial support to settle scores or white administrators acting without state approval.
Economic and administrative situation
Ruth Slade (1962)
The Free State was intended, above all, to be profitable for its investors and Leopold in particular. Its finances were frequently precarious. Early reliance on ivory exports did not make as much money as hoped and the colonial administration was frequently in debt, nearly defaulting on a number of occasions. A boom in demand for natural rubber in the 1890s, however, ended these problems as the colonial state was able to force Congolese males to work as forced labour collecting wild rubber which could then be exported to Europe and North America. The rubber boom transformed what had been an unexceptional colonial system before 1890 and led to significant profits. Exports rose from 580 to 3,740 tons between 1895 and 1900.
In order to facilitate economic extraction from the colony, land was divided up under the so-called Domain System (régime domanial) in 1891. All vacant land, including forests and areas not under cultivation, was decreed to be "uninhabited" and thus the possession of the state, leaving many of the Congo's resources (especially rubber and ivory) under direct colonial ownership. Concessions were allocated to private companies. In the north, the Société Anversoise was given 160,000 km2 (62,000 sq mi), while the Anglo-Belgian India Rubber Company (ABIR) was given a comparable territory in the south. The Compagnie du Katanga and Compagnie des Grands Lacs were given smaller concessions in the south and east respectively. Leopold kept a large proportion of territory under personal rule, known as the Crown Domain (Domaine de la Couronne), of 250,000 km2 (97,000 sq mi) which was added to the territory he already controlled under the Private Domain (Domaine privé). Thus most economic exploitation of the Congolese interior was undertaken by Leopold and the major concessionaires. The system was extremely profitable and ABIR made a turnover of over 100 per cent on its initial stake in a single year. The King made 70 million Belgian francs' profit from the system between 1896 and 1905. The Free State's concession system was soon copied by other colonial regimes, notably those in the neighbouring French Congo.
Red Rubber system and forced labour
With the majority of the Free State's revenues derived from the export of rubber, a labour policy (known by critics as the "Red Rubber system") was created to maximise its extraction. Labour was demanded by the administration as taxation.[a] This created a "slave society" as companies became increasingly dependent on forcibly mobilising Congolese labour for their collection of rubber. The state recruited a number of black officials, known as capitas, to organise local labour. However, the desire to maximise rubber collection, and hence the state's profits, meant that the centrally-enforced demands were often set arbitrarily without considering the numbers or the welfare of workers. In the concessionary territories, the private companies which had purchased a concession from the Free State administration were able to use virtually any measures they wished to increase production and profits without state interference. The lack of a developed bureaucracy to oversee any commercial methods produced an atmosphere of "informality" throughout the state in regards to the operation of enterprises, which in turn facilitated abuses. Treatment of labourers (especially the duration of service) was not regulated by law and instead was left to the discretion of officials on the ground. ABIR and the Anversoise were particularly noted for the harshness with which officials treated Congolese workers. The historian Jean Stengers described regions controlled by these two companies as "veritable hells-on-earth".
Workers who refused to supply their labour were coerced with "constraint and repression". Dissenters were beaten or whipped with the chicotte, hostages were taken to ensure prompt collection and punitive expeditions were sent to destroy villages which refused. The policy led to a collapse of Congolese economic and cultural life, as well as farming in some areas. Much of the enforcement of rubber production was the responsibility of the Force Publique, the colonial military. The Force had originally been established in 1885, with white officers and NCOs and black soldiers, and recruited from as far afield as Zanzibar, Nigeria, and Liberia. In the Congo, it recruited from specific ethnic and social demographics. These included the Bangala, and this contributed to the spread of the Lingala language across the country, and freed slaves from the eastern Congo. The so-called Zappo-Zaps (from the Songye ethnic group) were the most feared. Reportedly cannibals, the Zappo-Zaps frequently abused their official positions to raid the countryside for slaves. By 1900, the Force Publique numbered 19,000 men.
The red rubber system emerged with the creation of the concession regime in 1891 and lasted until 1906 when the concession system was restricted. At its height, it was heavily localised in the Équateur, Bandundu, and Kasai regions.
Mutilation and brutality
Failure to meet the rubber collection quotas was punishable by death. Meanwhile, the Force Publique were required to provide the hand of their victims as proof when they had shot and killed someone, as it was believed that they would otherwise use the munitions (imported from Europe at considerable cost) for hunting. As a consequence, the rubber quotas were in part paid off in chopped-off hands. Sometimes the hands were collected by the soldiers of the Force Publique, sometimes by the villages themselves. There were even small wars where villages attacked neighboring villages to gather hands, since their rubber quotas were too unrealistic to fill. A Catholic priest quotes a man, Tswambe, speaking of the hated state official Léon Fiévez, who ran a district along the river 500 kilometres (300 mi) north of Stanley Pool:
All blacks saw this man as the devil of the Equator ... From all the bodies killed in the field, you had to cut off the hands. He wanted to see the number of hands cut off by each soldier, who had to bring them in baskets ... A village which refused to provide rubber would be completely swept clean. As a young man, I saw [Fiévez's] soldier Molili, then guarding the village of Boyeka, take a net, put ten arrested natives in it, attach big stones to the net, and make it tumble into the river ... Rubber causes these torments; that's why we no longer want to hear its name spoken. Soldiers made young men kill or rape their own mothers and sisters.
One junior officer described a raid to punish a village that had protested. The officer in command "ordered us to cut off the heads of the men and hang them on the village palisades ... and to hang the women and the children on the palisade in the form of a cross". After seeing a Congolese person killed for the first time, a Danish missionary wrote, "The soldier said 'Don't take this to heart so much. They kill us if we don't bring the rubber. The Commissioner has promised us if we have plenty of hands he will shorten our service.'" In Forbath's words:
The baskets of severed hands, set down at the feet of the European post commanders, became the symbol of the Congo Free State. ... The collection of hands became an end in itself. Force Publique soldiers brought them to the stations in place of rubber; they even went out to harvest them instead of rubber ... They became a sort of currency. They came to be used to make up for shortfalls in rubber quotas, to replace ... the people who were demanded for the forced labour gangs; and the Force Publique soldiers were paid their bonuses on the basis of how many hands they collected.
In theory, each right hand proved a killing. In practice, to save ammunition soldiers sometimes "cheated" by simply cutting off the hand and leaving the victim to live or die. More than a few survivors later said that they had lived through a massacre by acting dead, not moving even when their hands were severed, and waiting till the soldiers left before seeking help. In some instances a soldier could shorten his service term by bringing more hands than the other soldiers, which led to widespread mutilations and dismemberment. Other practices used to force workers to collect rubber were taking women and family members hostage. Leopold II was reported to have disapproved of the dismemberments, not on human rights grounds but because it harmed his economic interests. He was quoted as saying "Cut off hands—that's idiotic. I'd cut off all the rest of them, but not hands. That's the one thing I need in the Congo."
Aside from rubber collection, violence in the Free State chiefly occurred in connection with wars and rebellions. Native states, notably Msiri's Yeke Kingdom, the Zande Federation, and Swahili-speaking territory in the eastern Congo under Tippu Tip, refused to recognise colonial authority and were defeated by the Force Publique with great brutality, during the Congo Arab war. In 1895, a military mutiny broke out among the Batetela in Kasai, leading to a 4-year insurgency. The conflict was particularly brutal and caused a great number of casualties.
Historians generally agree that a dramatic reduction in the overall size of the Congolese population occurred during the two decades of Free State rule in the Congo. It is argued that the reduction in the Congo was atypical and can be attributed to the direct and indirect effects of colonial rule and especially to disease and falling birthrate.
The historian Adam Hochschild argued that the dramatic fall in the Free State population was the result of a combination of "murder", "starvation, exhaustion and exposure", "disease" and "a plummeting birth rate". Roger Casement, concurs with this view. Sleeping sickness was also a major cause of fatality at the time. Opponents of Leopold's rule stated, however, that the administration itself was to be considered responsible for the spreading of the epidemic. Although it is impossible to be sure in the absence of records, violence and murder represented only a portion of the total. In a local study of the Kuba and Kete peoples, the historian Jan Vansina estimated that violence accounted for the deaths of less than five percent of the population.
Diseases imported by Arab traders, European colonists and African porters ravaged the Congolese population and "greatly exceeded" the numbers killed by violence. Smallpox, sleeping sickness, amoebic dysentery, venereal diseases (especially syphilis and gonorrhea), and swine influenza were particularly severe. Sleeping sickness, in particular, was "epidemic in large areas" of the Congo and had a high mortality rate. In 1901 alone, it is estimated that as many as 500,000 Congolese died from sleeping sickness. Vansina estimated that five percent of the Congolese population perished from swine influenza. In areas in which dysentery became endemic, between 30 and 60 percent of the population could die. Vansina also pointed to the effects of malnutrition and food shortages in reducing immunity to the new diseases. The disruption of African rural populations may have helped to spread diseases further. Nevertheless, historian Roger Anstey wrote that "a strong strand of local, oral tradition holds the rubber policy to have been a greater cause of death and depopulation than either the scourge of sleeping sickness or the periodic ravages of smallpox."
It is also widely believed that birth rates fell during the period too, meaning that the growth rate of the population fell relative to the natural death rate. Vansina, however, notes that precolonial societies had high birth and death rates, leading to a great deal of natural population fluctuation over time. Among the Kuba, the period 1880 to 1900 was actually one of population expansion.
A reduction of the population of the Congo is noted by all who have compared the country at the beginning of Leopold's control with the beginning of Belgian state rule in 1908, but estimates of the death toll vary considerably. Estimates of some contemporary observers suggest that the population decreased by half during this period. According to Edmund D. Morel, the Congo Free State counted "20 million souls". Hence, Mark Twain mentioned the number of ten million deaths. Other estimates of the size of the overall population decline (or mortality displacement) range between two and 13 million.[b] Ascherson cites an estimate by Casement of a population fall of three million, although he notes that it is "almost certainly an underestimate".
In the absence of a census providing even an initial idea of the size of population of the region at the inception of the Congo Free State (the first was taken in 1924), it is impossible to quantify population changes in the period. Despite this, Forbath more recently claimed the loss was at least five million. Adam Hochschild and Jan Vansina use the number 10 million. Hochschild cites several recent independent lines of investigation, by anthropologist Jan Vansina and others, that examine local sources (police records, religious records, oral traditions, genealogies, personal diaries), which generally agree with the assessment of the 1919 Belgian government commission: roughly half the population perished during the Free State period. Since the first official census by the Belgian authorities in 1924 put the population at about 10 million, these various approaches suggest a rough estimate of a total of 10 million dead. Jan Vansina returned to the issue of quantifying the total population decline, and revised his earlier position, he concluded that the Kuba population (one of the many Congolese populations) was rising during the first two decades of Leopold II's rule, and declined with 25 percent from 1900 to 1919, mainly due to sickness. Others argued a decrease of 20 percent over the first forty years of colonial rule (up to the census of 1924). According to the Congolese historian Isidore Ndaywel è Nziem 13 million died. To put these population changes in context, sourced references state that in 1900 Africa as a whole had between 90 million and 133 million people. However, no verifiable records exist. Louis and Stengers state that population figures at the start of Leopold's control are only "wild guesses", while calling E. D. Morel's attempt and others at coming to a figure for population losses "but figments of the imagination". However, authors that point out the lack of reliable demographic data are questioned by others calling the former minimalists and agnosticists.
Investigation and international awareness
Eventually, growing scrutiny of Leopold's regime led to a popular campaign movement, centered in the United Kingdom and the United States, to force Leopold to renounce his ownership of the Congo. In many cases, the campaigns based their information on reports from British and Swedish missionaries working in the Congo.
The first international protest occurred in 1890 when George Washington Williams, an American, published an open letter to Leopold about abuses he had witnessed. Public interest in the abuses in the Congo Free State grew sharply from 1895, when the Stokes Affair and reports of mutilations reached the European and American public which began to discuss the "Congo Question". To appease public opinion, Leopold instigated a Commission for the Protection of Natives (Commission pour la Protection des Indigènes), composed of foreign missionaries, but made few serious efforts at substantive reform.
In Britain, the campaign was led by the activist and pamphleteer E. D. Morel after 1900, whose book Red Rubber (1906) reached a mass audience. Notable members of the campaign included the novelists Mark Twain, Joseph Conrad and Arthur Conan Doyle as well as Belgian socialists such as Emile Vandervelde. Campaigning groups, especially the Congo Reform Association, inspired by its founder's Casement Report, did not oppose colonialism and instead sought to end the excesses of the Free State by encouraging Belgium to annex the colony officially. This would avoid damaging the delicate balance of power between France and Britain on the continent. While supporters of the Free State regime attempted to argue against claims of atrocities, a Commission of Enquiry, appointed by the regime in 1904, confirmed the stories of atrocities and pressure on the Belgian government increased.
In 1908, as a direct result of this campaign, Belgium formally annexed the territory, creating the Belgian Congo. Conditions for the indigenous population improved dramatically with the suppression of forced labour, although many officials who had formerly worked for the Free State were retained in their posts long after annexation. Instead of mandating labour for colonial enterprises directly, the Belgian administration used a coercive tax that deliberately pressured Congolese to find work with European employers to procure the necessary funds to make the payments. For some time after the end of the Free State the Congolese were also required to provide a certain number of days of service per year for infrastructure projects. In spite of these measures, the legacy of the population decline of Leopold's reign left the colonial government with a severe labour shortage and it often had to resort to mass migrations to provide workers to emerging businesses. Neither the Belgian monarchy nor the Belgian state have ever apologised for the atrocities.
Historiography and the term "genocide"
The significant number of deaths under the Free State regime has led to some scholars to relate the atrocities to later genocides, though understanding of the losses under the colonial administration's rule as the result of harsh economic exploitation has led others to dispute the comparison. According to the United Nations' 1948 definition of the term "genocide", a genocide must be "acts committed with intent to destroy, in whole or in part, a national, ethnical, racial or religious group". Sociologist Rhoda Howard-Hassmann stated that because the Congolese were not killed in a systematic fashion according to this criterion, "technically speaking, this was not genocide even in a legally retroactive sense." Hochschild and political scientist Georges Nzongola-Ntalaja rejected allegations of genocide in the Free State because there was no evidence of a policy of deliberate extermination or the desire to eliminate any specific population groups, though the latter added that nevertheless there was "a death toll of Holocaust proportions."
It is generally agreed by historians that extermination was never the policy of the Free State, which benefitted from the labour provided by Congolese workers. The Free State even made some efforts to attempt to tackle the spread of infectious diseases in the Congo by seeking the support of foreign medical institutes such as the Liverpool School of Tropical Medicine. According to historian David Van Reybrouck, "It would be absurd ... to speak of an act of 'genocide' or a 'holocaust'; genocide implies the conscious, planned annihilation of a specific population, and that was never the intention here, or the result ... But it was definitely a hecatomb, a slaughter on a staggering scale that was not intentional, but could have been recognised much earlier as the collateral damage of a perfidious, rapacious policy of exploitation". According to Hochschild, "while not a case of genocide, in the strict sense", the atrocities in the Congo were "one of the most appalling slaughters known to have been brought about by human agency".[d]
Historians have argued that comparisons drawn in the press by some between the death toll of the Free State atrocities and the Holocaust during World War II have been responsible for creating undue confusion over the issue of terminology. In one incident, the Japanese newspaper Yomiuri Shimbun used the word "genocide" in the title of a 2005 article by Hochschild. Hochschild himself criticised the title as "misleading" and stated that it had been chosen "without my knowledge". Similar criticism was echoed by historian Jean-Luc Vellut.
Allegations of genocide in the Free State have become common over time. According to historian Timothy J. Stapleton, "Those who easily apply the term genocide to Leopold's regime seem to do so purely on the basis of its obvious horror and the massive numbers of people who may have perished." One of the few historians to use the term is Robert Weisbord who argued, in a 2003 article, that there does not have to be intent to exterminate all members of a population in a genocide. He posited that "an endeavor to eliminate a portion of a people would qualify as genocide" according to the UN standards and asserted that the Free State did as much. Jeanne Haskin and Yaa-Lengi Meema Ngemi also refer to the atrocities as a genocide. Raphael Lemkin, coiner of the term "genocide", authored a manuscript in the 1950s (it was not published) that asserted the occurrence of "an unambiguous genocide" in the Free State, attributing most of the population decline to the repressive actions of colonial troops. In 2005, an early day motion before the British House of Commons, introduced by Andrew Dismore, called for the recognition of the Congo Free State's atrocities as a "colonial genocide" and called on the Belgian government to issue a formal apology. It was supported by 48 MPs.
The term "Congolese Genocide" is often used in an unrelated sense to refer to the mass murder and rape committed in the eastern Congo in the aftermath of the Rwandan Genocide (and the ensuing Second Congo War) between 1998 and 2003.
- Casement Report
- The King Incorporated
- Peruvian Amazon Company – a company whose rubber-related atrocities in South America were widely compared to those in the Congo Free State
- The Dream of the Celt (2010) by Mario Vargas Llosa – a novel exploring the life of Casement
- Brussels Anti-Slavery Conference 1889–90
- Brussels Conference Act of 1890
- Royal Museum for Central Africa
Notes and references
- Demanding taxation in the form of forced labour was common across colonial Africa at the time.
- The first census taken in the Congo was in 1924, so it is impossible to be sure of the size of the population at either the beginning or the end of the Free State period.
- The accuracy of the 1924 census has itself been criticised.
- Hochschild did label the German extermination of the Herero in South-West Africa (1904–1907) as a genocide because of its defined, systematic and intentional nature.
- Stanley, Tim. "Belgium's Heart of Darkness". History Today. Retrieved 6 March 2017.
- Ankomah, Baffour. "The Butcher of Congo". AfricaAsia.com. Retrieved 6 March 2017.
- Pakenham 1992, pp. 12–5.
- Pakenham 1992, pp. 253–5.
- Slade 1962, p. 171.
- Slade 1962, p. 172.
- Stengers 1969, p. 275.
- Van Reybrouck 2014, p. 63.
- Slade 1962, p. 173.
- Van Reybrouck 2014, p. 60.
- Van Reybrouck 2014, p. 91.
- Slade 1962, p. 178.
- Stengers 1969, p. 274.
- Stengers 1969, p. 272.
- Van Reybrouck 2014, pp. 78–9.
- Renton, Seddon & Zeilig 2007, p. 37.
- Stengers 1969, p. 265.
- Slade 1962, p. 177.
- Van Reybrouck 2014, p. 79.
- Van Reybrouck 2014, p. 87.
- Renton, Seddon & Zeilig 2007, p. 38.
- Vangroenweghe 2006, pp. 323–6.
- Stengers 1969, pp. 267–8.
- Renton, Seddon & Zeilig 2007, p. 28.
- Gibbs 1991, p. 51.
- Stengers 1969, p. 270.
- Van Reybrouck 2014, p. 94.
- Van Reybrouck 2014, pp. 76–7.
- Slade 1962, p. 181.
- Hochschild 1999, p. 123.
- Nzongola-Ntalaja 2007, p. 22.
- Van Reybrouck 2014, p. 96.
- Renton, Seddon & Zeilig 2007, p. 30.
- Hochschild, King Leopold's Ghost, p. 166
- Bourne, Henry Richard Fox (1903). Civilisation in Congoland: A Story of International Wrong-doing. London: P. S. King & Son. p. 253. Retrieved 2007-09-26.
- Forbath, Peter (1977). The River Congo: The Discovery, Exploration and Exploitation of the World's Most Dramatic Rivers. Harper & Row. p. 374. ISBN 0-06-122490-1.
- Renton, Seddon & Zeilig 2007, p. 31.
- "The hidden holocaust". the Guardian. 1999-05-13. Retrieved 2018-10-20.
- Renton, Seddon & Zeilig 2007, p. 33.
- Van Reybrouck 2014, p. 82.
- Ascherson 1999, p. 9.
- Gibbs 1991, p. 46.
- Hochschild 1999, p. 226.
- Hochschild, A. pp. 226–232.
- Hochschild, A. pp. 230–231.
- Vansina 2010, p. 136.
- Vansina 2010, p. 137.
- Vansina 2010, p. 138.
- Lyons 1992, p. 7.
- Hochschild 1999, p. 231.
- Vansina 2010, pp. 143–4.
- Vansina 2010, p. 143.
- Vansina 2010, p. 146.
- Morel, E. D. (1904) King Leopold's Rule in Africa. London: William Heinnemann, p. 105
- Twain, M. (1905) King Leopold’s soliloquy a defense of his Congo rule. Boston: P. R. Warren Co., p. 12.
- Hochschild 1999, p. 233.
- Vansina 2010, p. 128.
- Ascherson 1999, pp. 9, 251.
- Shelton, D. (2005). Encyclopedia of Genocide and Crimes Against Humanity. Detroit, Michigan: Macmillan. p. 621. ISBN 0-02-865849-3.
- Forbath, P. The River Congo: The Discovery, Exploration, and Exploitation of the World's Most Dramatic River, 1991 (Paperback). Harper & Row. ISBN 0-06-122490-1.
- Hochschild, A. (2006). King Leopold's Ghost: A Story of Greed, Terror, and Heroism in Colonial Africa. pp. 225–33. ISBN 978-1-74329-160-3.
- Jan Vansina is an anthropologist that made quantitative estimates based on qualitative research.
- Vansina, Jan (2010). Being Colonized: The Kuba Experience in Rural Congo, 1880–1960. Madison, Wisconsin: University of Wisconsin Press. pp. 127–149.
- Vanthemsche, Guy (2012). Belgium and the Congo, 1885���1980. New York: Cambridge University Press. ISBN 978-0-521-19421-1. p 25
- http://www.congo2005.be/geheugen/brochureEN.pdf pages 8–9
- Ndaywel è Nziem, I. Histoire générale du Congo: De l'héritage ancien à la République Démocratique.
- Martin, G. (2006). "What Went Wrong with Africa?". Review. African Studies Review. 49 (1): 179–181. doi:10.1353/arw.2006.0081.
- World Population Prospects: The 2006 Revision
- Louis, R. and Stengers, J. (1968) E.D. Morel's History of the Congo Reform Movement. Oxford: Clarendon, pp. 252–257.
- Roes, A (2010). "Towards a History of Mass Violence in the Etat Indépendant du Congo, 1885–1908". South African Historical Journal. 62 (4): 12.
- Vanthemsche 2012, p. 24.
- Slade 1962, p. 179.
- Renton, Seddon & Zeilig 2007, p. 36.
- Slade 1962, pp. 178–9.
- Slade 1962, p. 180.
- Renton, Seddon & Zeilig 2007, p. 39.
- Vanthemsche 2012, p. 26.
- Pakenham 1992, pp. 657; 663.
- Stengers 1969, p. 271.
- Gibbs 1991, p. 52.
- "A Belgian Visit to "Kongo"". The New Yorker. Retrieved 2018-10-20.
- Stapleton 2017, p. 87.
- Hochschild 1999, p. 255.
- Stapleton 2017, p. 88.
- New York Review of Books 2005.
- Van Reybrouck 2014, p. 95.
- Lyons 1992, p. 74.
- Ascherson 1999, pp. 8–9.
- Hochschild 1999, pp. 281–2.
- New York Review of Books 2006.
- Stapleton 2017, pp. 88–89.
- Early day motion 2251.
- Drumond 2011.
- World Without Genocide 2012.
- Ascherson, Neal (1999). The King Incorporated: Leopold the Second and the Congo (New ed.). London: Granta. ISBN 1-86207-290-6.
- "Democratic Republic of the Congo". World Without Genocide. 2012. Retrieved 29 July 2015.
- Drumond, Paula (2011). "Invisible Males: The Congolese Genocide". In Adam Jones. New Directions in Genocide Research. Routledge. pp. 96–112. ISBN 978-0-415-49597-4.
- "Early day motion 2251". Houses of Parliament. Retrieved 29 December 2015.
- Gibbs, David N. (1991). The Political Economy of Third World Intervention: Mines, Money, and U.S. Policy in the Congo Crisis. American Politics and Political Economy. Chicago: University of Chicago Press. ISBN 9780226290713.
- Hochschild, Adam (1999). King Leopold's Ghost: A Story of Greed, Terror, and Heroism in Colonial Africa (1st ed.). Boston: Houghton Mifflin. ISBN 978-0-618-00190-3.
- Stengers, Jean (1969). "The Congo Free State and the Belgian Congo before 1914". In Gann, L. H.; Duignan, Peter. Colonialism in Africa, 1870–1914. I. Cambridge: Cambridge University Press. pp. 261–92.
- Hochschild, Adam (6 October 2005). "In the Heart of Darkness". New York Review of Books. 52 (15).
- Lyons, Maryinez (1992). The Colonial Disease: A Social History of Sleeping Sickness in Northern Zaire, 1900–1940. Cambridge: Cambridge University Press. ISBN 0-521-40350-2.
- Nzongola-Ntalaja, Georges (2007). The Congo, From Leopold to Kabila: A People's History (3rd ed.). New York: Palgrave. ISBN 978-1-84277-053-5.
- Pakenham, Thomas (1992). The Scramble for Africa: the White Man's Conquest of the Dark Continent from 1876 to 1912. London: Abacus. ISBN 978-0-349-10449-2.
- Renton, David; Seddon, David; Zeilig, Leo (2007). The Congo: Plunder and Resistance. London: Zed Books. ISBN 978-1-84277-485-4.
- Slade, Ruth M. (1962). King Leopold's Congo: Aspects of the Development of Race Relations in the Congo Independent State. Institute of Race Relations. Oxford: Oxford University Press. OCLC 655811695.
- Stapleton, Timothy J. (2017). A History of Genocide in Africa. ABC-CLIO. ISBN 9781440830525.
- Vangroenweghe, Daniel (2006). "The 'Leopold II' concession system exported to French Congo with as example the Mpoko Company" (PDF). Revue belge d'Histoire contemporaine-Belgisch Tijdschrift voor Nieuwste Geschiedenis. 36 (3–4): 323–72.
- Van Reybrouck, David (2014). Congo: The Epic History of a People. London: Fourth Estate. ISBN 978-0-00-756290-9.
- Vansina, Jan (2010). Being Colonized: The Kuba Experience in Rural Congo, 1880–1960. Madison: University of Wisconcin Press. ISBN 978-0-299-23644-1.
- Vanthemsche, Guy (2012). Belgium and the Congo, 1885–1980. New York: Cambridge University Press. ISBN 978-0-521-19421-1.
- Vellut, Jean-Luc (12 January 2006). "Response to 'In the Heart of Darkness'". New York Review of Books. 53 (1).
- De Mul, Sarah (2011). "The Holocaust as a Paradigm for the Congo Atrocities: Adam Hochschild's "King Leopold's Ghost"". Criticism. 53 (4): 587–606. JSTOR 23133898.
- Dumoulin, Michel (2005). Léopold II, un roi génocidaire?. Brussels: Académie Royale de Belgique. ISBN 978-2-8031-0219-8.
- Ewans, Martin (2001). European atrocity, African catastrophe: Leopold II, the Congo Free State and its aftermath. Richmond: Curzon. ISBN 978-0-7007-1589-3.
- Grant, Kevin (2005). A Civilised Savagery: Britain and the New Slaveries in Africa, 1884–1926. New York: Routledge. ISBN 0-415-94900-9.
- Rose Hunt, Nancy (2008). "An Acoustic Register, Tenacious Images, and Congolese scenes of Rape and Repetition" Cultural Anthropology, Issue 2, Vol. 23
- Casement Report (1904).
- Vanthemsche, Guy (2006). "The Historiography of Belgian Colonialism in the Congo". In Csaba I. Lévai. Europe and the world in European historiography (PDF). Pisa: Pisa University Press. pp. 89–119.