4. Leopold II
Leopold II of Belgium was the owner of the Congo Free State and the second king of Belgium. He succeeded Leopold I, his father, in 1865 and remained in power until his death. The Congo Free State under his regime was one of the most controversial scandals in history. Leopold privately owned territories in Africa that was 76 times larger than the modern day Belgium and under his rule 3 million Congolese died through forced labor and oppression.
