section_path: History and characteristics/Colonization before World War I/Congo
section_name: Congo
paragraph_text: Congo
  
  David Livingstone 's explorations, carried on by Henry Morton Stanley, excited imaginations with Stanley's grandiose ideas for colonisation; but these found little support owing to the problems and scale of action required, except from Leopold II of Belgium, who in 1876 had organised the International African Association. From 1869 to 1874, Stanley was secretly sent by Leopold II to the Congo region, where he made treaties with several African chiefs along the Congo River and by 1882 had sufficient territory to form the basis of the Congo Free State.
  
  While Stanley was exploring the Congo on behalf of Leopold II of Belgium, the Franco-Italian marine officer Pierre de Brazza travelled into the western Congo Basin and raised the French flag over the newly founded Brazzaville in 1881, thus occupying today's Republic of the Congo. Portugal, which also claimed the area because of old treaties with the Kingdom of Kongo, made a treaty with Britain on 26 February 1884 to block off Leopold's access to the Atlantic.
  
  By 1890 the Congo Free State had consolidated control of its territory between Leopoldville and Stanleyville and was looking to push south down the Lualaba River from Stanleyville. At the same time, the British South Africa Company of Cecil Rhodes was expanding north from the Limpopo River, sending the Pioneer Column (guided by Frederick Selous) through Matabeleland, and starting a colony in Mashonaland.
  
  Tippu Tip, a Zanzibari Arab based in the Sultanate of Zanzibar, also played a major role as a "protector of European explorers", ivory trader and slave trader. Having established a trading empire within Zanzibar and neighbouring areas in East Africa, Tippu Tip would shift his alignment towards the rising colonial powers in the region and at the proposal of Henry Morton Stanley, Tippu Tip became a governor of the " Stanley Falls District " (Boyoma Falls) in Leopold's Congo Free State, before being involved in the Congo–Arab War against Leopold II's colonial state.
  
  To the west, in the land where their expansions would meet, was Katanga, the site of the Yeke Kingdom of Msiri. Msiri was the most militarily powerful ruler in the area and traded large quantities of copper, ivory and slaves—and rumours of gold reached European ears. The scramble for Katanga was a prime example of the period. Rhodes sent two expeditions to Msiri in 1890 led by Alfred Sharpe, who was rebuffed, and Joseph Thomson, who failed to reach Katanga. Leopold sent four expeditions. First, the Le Marinel expedition could only extract a vaguely worded letter. The Delcommune expedition was rebuffed. The well-armed Stairs expedition was given orders to take Katanga with or without Msiri's consent. Msiri refused, was shot, and his head was cut off and stuck on a pole as a "barbaric lesson" to the people. The Bia River expedition finished the job of establishing an administration of sorts and a "police presence" in Katanga. Thus, the half million square kilometres of Katanga came into Leopold's possession and brought his African realm up to 2,300,000 square kilometres (890,000 sq mi), about 75 times larger than Belgium. The Congo Free State imposed such a terror regime on the colonized people, including mass killings and forced labour, that Belgium, under pressure from the Congo Reform Association, ended Leopold II's rule and annexed it on 20 August 1908 as a colony of Belgium, known as the Belgian Congo.
  
  The brutality of King Leopold II in his former colony of the Congo Free State was well documented; up to 8 million of the estimated 16 million native inhabitants died between 1885 and 1908. According to Roger Casement, an Irish diplomat of the time, this depopulation had four main causes: "indiscriminate war", starvation, reduction of births and diseases. Sleeping sickness ravaged the country and must also be taken into account for the dramatic decrease in population; it has been estimated that sleeping sickness and smallpox killed nearly half the population in the areas surrounding the lower Congo River. Estimates of the death toll vary considerably. As the first census did not take place until 1924, it is difficult to quantify the population loss of the period. The Casement Report set it at three million. William Rubinstein writes: "More basically, it appears almost certain that the population figures given by Hochschild are inaccurate. There is, of course, no way of ascertaining the population of the Congo before the twentieth century, and estimates like 20 million are purely guesses. Most of the interior of the Congo was literally unexplored if not inaccessible."
  
  A similar situation occurred in the neighbouring French Congo, where most of the resource extraction was run by concession companies, whose brutal methods, along with the introduction of disease, resulted in the loss of up to 50% of the indigenous population according to Hochschild. The French government appointed a commission headed by de Brazza in 1905 to investigate the rumoured abuses in the colony. However, de Brazza died on the return trip, and his "searingly critical" report was neither acted upon nor released to the public. In the 1920s, about 20,000 forced labourers died building a railroad through the French territory.