Congo Free State
The African territory King Leopold II owned personally from 1885 to 1908 and ran as a rubber extraction machine that killed on an uncountable scale.
The Congo Free State was not a Belgian colony. It was the private property of one man. Between 1885 and 1908, King Leopold II of the Belgians personally owned a territory of nearly a million square miles, seventy-six times the size of Belgium, which he never once visited. He acquired it by persuading the great powers that he was running a humanitarian and anti-slavery project, and he ran it as an extraction operation whose methods, when finally documented, produced the first modern international human rights campaign.
How a king acquired a country
Leopold ruled a small constitutional monarchy that gave him little to do, and he wanted an empire. The Belgian parliament refused to buy one, so he built one privately: he hired the explorer Henry Morton Stanley to sign hundreds of treaties with Congolese chiefs, most of whom could not read the documents ceding their sovereignty, and he lobbied the capitals of Europe with the language of philanthropy, free trade, and suppressing the Arab slave trade. At the Berlin Conference of 1884 to 1885, the powers duly recognized his International Association of the Congo. The United States recognized it first.
Rubber
For a decade the venture lost money on ivory. Then John Boyd Dunlop's pneumatic tire, and the bicycle and automobile booms behind it, sent world rubber prices soaring, and the Congo basin was full of wild rubber vines.
The system that followed was simple and murderous. Leopold declared all "vacant" land, meaning nearly everything, state property, and imposed rubber quotas on villages. His private army, the Force Publique, officered by Europeans and manned by conscripted Africans, enforced them. Soldiers took women and children hostage until the men returned with enough latex. Villages that fell short were burned. Because cartridges were expensive and officers suspected soldiers of hunting with them, troops were required to account for every round fired by producing a severed right hand, which created a trade in hands, cut sometimes from the living. The photographs of mutilated Congolese children, taken by missionaries, were among the first atrocity images to circulate globally.
Nobody knows the death toll. There was never a census. Roger Casement, a British consul whose 1904 report to the Foreign Office documented the system in forensic detail, estimated three million dead. Adam Hochschild's widely read account puts the population loss at around ten million, roughly half, between 1885 and 1920, counting murder, starvation, exhaustion, disease, and collapsed birth rates. Serious estimates range from about 1.2 million upward, and the honest answer is that the regime destroyed the evidence along with the people.
The first human rights campaign
The exposure came from a shipping clerk. E. D. Morel, working for a Liverpool line, noticed that the ships to the Congo carried guns, chains, and ammunition, while the ships back carried rubber and ivory: no trade goods went out, so nothing was being purchased. That accounting anomaly, combined with Casement's report, launched the Congo Reform Association, which pioneered the modern toolkit of mass meetings, lantern-slide atrocity photographs, and celebrity endorsement. Mark Twain wrote a savage satire, "King Leopold's Soliloquy." Arthur Conan Doyle joined. Joseph Conrad, who had piloted a Congo steamer, had already published Heart of Darkness.
Under that pressure the Belgian parliament bought the territory from its own king in 1908 and turned it into the Belgian Congo, a conventional colony that was brutal in ordinary rather than exceptional ways. Leopold burned the state archives before handing over, remarking that the Congo was his and nobody had the right to know what he had done there. He died the following year.
The Congo has never escaped the shape he gave it: a state built to move minerals to the coast and to govern nothing else, with borders enclosing more than 200 language groups and no reason to cohere. Independence in 1960 was followed within weeks by secession and the murder of Lumumba, then three decades of Mobutu, then the deadliest wars since 1945. The country still supplies the world's cobalt on terms it does not set.