Leopold II, King of the Belgians, privately controlled and owned the Congo Free State from 1885 to 1908. In 1908, the area was annexed by Belgium as a colony known as the Belgian Congo. Leopold used his personal control to strip the county of vast amounts of wealth, largely in the form of ivory and rubber. These labor-intensive industries were serviced by slave labor, and the local peoples were forced to work through various means, including torture, imprisonment, maiming and terror. Christian missionaries and a handful of human rights organizers internationally publicized these atrocities. Slowly, various nations, including Great Britain and the United States of America, began to object to Leopold's tyranny with the result that the country's administration was transferred to Belgium. Little changed inside the country, however, until the ivory and rubber were exhausted.European interest in the African continent can be traced back to the late 1400s, when a European explorer sailed the west coast and discovered the Congo River. By the 1860s, most African coastal regions were claimed as colonies of European powers, but the vast interior of the continent remained unknown to Europeans. Henry Morton Stanley, a complicated man and renowned explorer, ventured through much of that unknown during a descent of the Congo River. Leopold II, King of the Belgians, was fascinated with obtaining a colony and focused upon claiming the interior of Africa--the only unclaimed sizable geographic area. Moving within the European political paradigm existing in the early 1880s, Leopold gained international concessions and recognition for his personal claim to the Congo Free State.