was displayed in England in the beginning of the 19th century, the African Association publicly opposed itself to the exhibition. The same year that Kipling published his poem, Joseph Conrad published Heart of Darkness (1899), a clear criticism of the Congo Free State, which was owned by Leopold II of Belgium. Examples of racial theories used include the creation of the Hamitic ethno-linguistic group during the European exploration of Africa. It was then restricted by Karl Friedrich Lepsius (1810–1877) to non-Semitic Afro-Asiatic languages. The term Hamite was applied to different populations within North Africa, mainly comprising Ethiopians, Eritreans, Somalis, Berbers, and the ancient Egyptians. Hamites were regarded as Caucasoid peoples who probably originated in either Arabia or Asia on the basis of their cultural, physical and linguistic similarities with the peoples of those areas. Europeans considered Hamites to be more civilized than Sub-Saharan Africans, and more akin to themselves and Semitic peoples. In the first two-thirds of the 20th century, the Hamitic race was, in fact, considered one of the branches of the Caucasian race, along with the Indo-Europeans, Semites, and the Mediterraneans. However, the Hamitic peoples themselves were often deemed to have failed as rulers, which was usually ascribed to interbreeding with Negroes. In the mid-20th century, the German scholar Carl Meinhof (1857–1944) claimed that the Bantu race was formed by a merger of Hamitic and Negro races. The Hottentots (Nama or Khoi) were formed by the merger of Hamitic and Bushmen (San) races—both being termed nowadays as Khoisan peoples. In the United States in the early 19th century, the American Colonization Society was established as the primary vehicle for proposals to return black Americans to greater freedom and equality in Africa. The colonization effort resulted from a mixture of motives with its founder Henry Clay stating that "unconquerable prejudice resulting from their color, they never could amalgamate with the free whites of this country. It was desirable, therefore, as it respected them, and the residue of the population of the country, to drain them off". Racism spread throughout the New World in the late 19th century and early 20th century. Whitecapping, which started in Indiana in the late 19th century, soon spread throughout all of North America, causing many African laborers to flee from the land they worked on. In the US, during the 1860s, racist posters were used during election campaigns. In one of these racist posters