Start with the name, because it causes confusion. From 1885 to 1908, the Congo was King Leopold II's personal property, officially the État Indépendant du Congo, not a colony of the Belgian government. It became the Belgian Congo in 1908, when Belgium took it over, and it stayed a colony until independence in 1960.
Leopold ran the Congo for profit, especially after the 1890s rubber boom created by bicycle and car tires. Villages received rubber quotas. The Force Publique, African soldiers under European officers, enforced them by holding women and children hostage, burning villages and flogging people with the chicotte, a hippo-hide whip. Soldiers had to account for every bullet, so they cut off hands as proof, and living people were mutilated too.
The Congo's population fell sharply because of violence, famine, disease and falling birth rates. Some estimates put the total population loss at about 10 million, or roughly half the population, but the lack of reliable censuses means historians debate the figure. E. D. Morel, a shipping clerk, noticed that ships went to the Congo carrying guns and ammunition and came back full of rubber and ivory. Roger Casement's 1904 report documented the abuses, and Morel founded and led the Congo Reform Association with support from Casement and others.
Belgian rule ended the worst of the rubber terror but stayed coercive. Katanga's copper enriched the company Union Minière, and uranium from the Shinkolobwe mine went into the U.S. atomic bombs of 1945.
- Leopold's Congo state (1885-1908): Leopold's Congo state, officially the État Indépendant du Congo, was owned personally by Leopold II and run through forced labor and terror.
- Force Publique: The Force Publique was the colonial army of the Congo, made up of African soldiers led by European officers, and it enforced rubber quotas with violence.
- Congo Reform Association: The Congo Reform Association was a campaign founded in 1904 by E. D. Morel, with support from Roger Casement and others, that exposed Leopold's abuses and pushed Belgium to take over the Congo.
Check yourself. What changed in 1908, and what stayed the same? (A correct answer explains that the Belgian state took the Congo from Leopold, ending his private rule and the worst of the rubber terror, while Belgian rule stayed extractive and coercive, with forced labor especially in earlier decades and harsh conditions in mines and plantations.)