Edited sentence: - :"...the Negro nations are, as a rule, submissive to slavery, because (Negroes) have little that is (essentially) human and possess attributes that are quite similar to those of dumb animals...".In the same period, the Egyptian Al-Abshibi (1388-1446) wrote, "It is said that when the [black] slave is sated, he fornicates, when he is hungry, he steals.Racist opinions occurred in the works of some historians and geographers: so in the 14th century CE Ibn Khaldun could write:.The Arab slave trade from Africa is one of the oldest slave trades, predating the European transatlantic slave trade by hundreds of years