The espousal of the doctrine of Negro inferiority by the South was primarily because of economic motives and the inter-connected political urge neces… - W. E. B. Du Bois

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The espousal of the doctrine of Negro inferiority by the South was primarily because of economic motives and the inter-connected political urge necessary to support slave industry; but to the watching world it sounded like the carefully thought out result of experience and reason; and because of this it was singularly disastrous for modern civilization science and religion, in art and government, as well as in industry. The South could say that the Negro, even when brought into modern civilization, could not be civilized, and that, therefore, he and the other colored peoples of the world were so far inferior to the whites that the white world had a right to rule mankind for their own selfish interests.