<P> In the 9th century, Al - Jahiz, an Afro - Arab Islamic philosopher attempted to explain the origins of different human skin colors, particularly black skin, which he believed to be the result of the environment . He cited a stony region of black basalt in the northern Najd as evidence for his theory . </P> <P> In the 14th century, the Islamic sociologist Ibn Khaldun, a proponent dispelled the Babylonian Talmud's account of peoples and their characteristics as a myth . He wrote that black skin was due to the hot climate of sub-Saharan Africa and not due to the descendants of Ham being cursed . </P> <P> Independently of Ibn Kaldun's work, the question of whether skin colour is heritable or a product of the environment is raised in 17th to 18th century European anthropology . Georgius Hornius (1666) inherits the rabbinical view of heritability, while François Bernier (1684) argues for at least partial influence of the environment . Ibn Khaldun's work was later translated into French, especially for use in Algeria, but in the process, the work was "transformed from local knowledge to colonial categories of knowledge". William Desborough Cooley'1s The Negro Land of the Arabs Examined and Explained (1841) has excerpts of translations of Khaldun's work that were not affected by French colonial ideas . For example, Cooley quotes Khaldun's describing the great African civilization of Ghana (in Cooley's translation): </P> <Dl> <Dd> "When the conquest of the West (by the Arabs) was completed, and merchants began to penetrate into the interior, they saw no nation of the Blacks so mighty as Ghánah, the dominions of which extended westward as far as the Ocean . The King's court was kept in the city of Ghánah, which, according to the author of the' Book of Roger' (El Idrisi), and the author of the' Book of Roads and Realms' (El Bekri), is divided into two parts, standing on both banks of the Nile, and ranks among the largest and most populous cities of the world . </Dd> <Dd> The people of Ghánah had for neighbours, on the east, a nation, which, according to historians, was called Súsú; after which came another named Máli; and after that another known by the name of Kaǘkaǘ; although some people prefer a different orthography, and write this name Kághó . The last - named nation was followed by a people called Tekrúr . The people of Ghánah declined in course of time, being overwhelmed or absorbed by the Molaththemún (or muffled people; that is, the Morabites), who, adjoining them on the north towards the Berber country, attacked them, and, taking possession of their territory, compelled them to embrace the Mohammedan religion . The people of Ghánah, being invaded at a later period by the Súsú, a nation of Blacks in their neighbourhood, were exterminated, or mixed with other Black nations ." </Dd> </Dl>

Who may have been the first european who attempted to classify the peoples of the world