The indigenous peoples of the Americas, Australia, and New Zealand bear a tragic witness to what Christian nations have done, as have also the indigenous peoples of Africa and Asia. In a fifteenth century papal bull Pope Nicolas V instructed European Christian nations to "invade, capture, vanquish" and "subdue" Indigenous Peoples, "subjugate" them and "reduce their persons to perpetual slavery" and "to take away all their possessions and property." And according to a United Nations World Conference Against Racism document, he also "declared war against all non-Christians throughout the world".