For a well researched answer, read, or watch King Leopold's Ghost.
King Leopold the II, was the king of Belgium and responsible for the deaths of many in the Belgium Congo.
King Leopold II
He was Leopold II.
King Leopold of Belgium became the monarch of the Congo Free State.
Congo Free State
Henry Stanley
King Leopold of Belgium became the monarch of the Congo Free State.
King Leopold of Belgium became the monarch of the Congo Free State.
Leopold II
King Leopold of Belgium became the monarch of the Congo Free State.
Modern day Zaire.
King Leopold II was considered by the white people of his day as an effective and influential ruler. As king of Belgium, he led the colonization of the then-Belgian Congo, which provided great wealth to his country, all derived from the natural resources which the Congo had in abundance. But Africans, as well as modern students of colonialism, do not hold such a positive view of King Leopold. The modern view is that he was a harsh and brutal dictator, who plundered the mineral wealth of the Congo, provided little infrastructure or education for the Congolese people, and only cared about the riches the Congo could deliver to Belgium, while relegating the African citizenry to lives of extreme poverty and servitude. An excellent study of what King Leopold did can be found in the 1998 book "King Leopold's Ghost" by Adam Hochschild.