“In 1452, Pope Nicholas V issued to King Alfonso V of Portugal the bull Romanus Pontifex, declaring war against all non-Christians throughout the world, and specifically sanctioning and promoting the conquest, colonization, and exploitation of non-Christian nations and their territories.”
There is an English translation of the bull Romanus Pontifex.
Which contains this line: “We [therefore] weighing all and singular the premises with due meditation, and noting that since we had formerly by other letters of ours granted among other things free and ample faculty to the aforesaid King Alfonso – to invade, search out, capture, vanquish, and subdue all Saracens and pagans whatsoever, and other enemies of Christ wheresoever placed, and the kingdoms, dukedoms, principalities, dominions, possessions, and all movable and immovable goods whatsoever held and possessed by them and to reduce their persons to perpetual slavery, and to apply and appropriate to himself and his successors the kingdoms…”
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