During the past 500-1000 years, racism on the part of Western powers toward non-Westerners has had a far more significant impact on history than any other form of racism (such as racism among Western groups or among Easterners, such as Asians, Africans, and others). The most notorious example of racism by the West has been slavery, particularly the enslavement of Africans in the New World (slavery itself dates back thousands of years). This enslavement was accomplished because of the racist belief that Black Africans were less fully human than white Europeans and their descendants.