 The Iberian Peninsula may also have witnessed the first stirrings of antiblack and anti-Native-American racism. Since this region was the first in Europe to utilize African slavery while gradually rejecting the enslavement of fellow European Christians, Iberian Christians may have come to associate Black people as physically and mentally suitable only for menial labor. In this they were influenced by Arab slave merchants, who assigned the worst tasks to their dark-skinned slaves while assigning more complex labor to light or tawny-skinned slaves (Frederickson 2002, 29). The “discovery” of the New World by Iberian explorers also brought European Christians into contact with indigenous Americans for the first time. This resulted in the heated debate in Valladolid in 1550 between Bartolomé Las Casas and Gines de Sepúlveda over whether the Indians were by nature inferior and thus worthy of enslavement and conquest. Whether due to Las Casas’ victory over Sepúlveda, or due to the hierarchical character of Spanish Catholicism which did not require the dehumanization of other races in order to justify slavery, the Spanish empire did avoid the racialization of its conquered peoples and African slaves. Indeed, arguably it was the conflict between the Enlightenment ideals of universal freedom and equality versus the fact of the European enslavement of Africans and indigenous Americans that fostered the development of the idea of race (Blum 2002, 111–112; Hannaford 1996, 149–150).