Pope Nicholas V, Dum diversas, 1452

Dum Diversas, issued by Pope Nicholas V in 1452, stands as a significant papal bull during the Age of Discovery. The bull is a notable expression of the Church's role in justifying European colonial expansion, endorsing the subjugation of non-Christian lands. Dum Diversas is a key primary source reflecting the prevailing mindset of the time and contributing to the legal and ideological foundations of European imperialism in the early modern period. 

We 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, dukedoms, counties, principalities, dominions, possessions, and goods, and to convert them to his and their use and profit – by having secured the said faculty, the said King Alfonso, or, by his authority, the aforesaid infante, justly and lawfully has acquired and possessed, and doth possess, these islands, lands, harbors, and seas, and they do of right belong and pertain to the said King Alfonso and his successors.

Romanus Pontifex, another notable papal bull issued by Pope Nicholas V in 1455, holds historical significance in the context of European exploration and expansion. This document follows Dum Diversas and is directed towards King Alfonso V of Portugal and his successors. Romanus Pontifex addresses the issue of the Portuguese Crown's activities in Africa and emphasizes the promotion of Christianity in newly discovered territories. The bull underscores the papal support for the spread of the Christian faith, providing a religious justification for the Portuguese endeavors and contributing to the broader framework of the Doctrine of Discovery. This doctrine, rooted in papal bulls like Dum Diversas and Romanus Pontifex, provided a religious and legal framework for European powers to legitimize their territorial claims and colonial endeavors. It sanctified the right of Christian explorers to assert control over non-Christian lands, profoundly influencing subsequent colonial policies and contributing to the expansionist mindset of the time. Examining Romanus Pontifex offers valuable insights into the religious and political dynamics that shaped European colonial ventures during the 15th century. 

Nicholas, bishop, servant of the servants of God. for a perpetual remembrance.

The Roman pontiff, successor of the key-bearer of the heavenly kingdom and vicar of Jesus Christ, contemplating with a father’s mind all the several climes of the world and the characteristics of all the nations dwelling in them and seeking and desiring the salvation of all, wholesomely ordains and disposes upon careful deliberation those things which he sees will be agreeable to the Divine Majesty and by which he may bring the sheep entrusted to him by God into the single divine fold, and may acquire for them the reward of eternal felicity, and obtain pardon for their souls. This we believe will more certainly come to pass, through the aid of the Lord, if we bestow suitable favors and special graces on those Catholic kings and princes, who, like athletes and intrepid champions of the Christian faith, as we know by the evidence of facts, not only restrain the savage excesses of the Saracens and of other infidels, enemies of the Christian name, but also for the defense and increase of the faith vanquish them and their kingdoms and habitations, though situated in the remotest parts unknown to us, and subject them to their own temporal dominion, sparing no labor and expense, in order that those kings and princes, relieved of all obstacles, may be the more animated to the prosecution of so salutary and laudable a work.

We have lately heard, not without great joy and gratification, how our beloved son, the noble personage Henry, infante of Portugal, uncle of our most dear son in Christ, the illustrious Alfonso, king of the kingdoms of Portugal and Algarve, treading in the footsteps of John, of famous memory, king of the said kingdoms, his father, and greatly inflamed with zeal for the salvation of souls and with fervor of faith, as a Catholic and true soldier of Christ, the Creator of all things, and a most active and courageous defender and intrepid champion of the faith in Him, has aspired from his early youth with his utmost might to cause the most glorious name of the said Creator to be published, extolled, and revered throughout the whole world, even in the most remote and undiscovered places, and also to bring into the bosom of his faith the perfidious enemies of him and of the life-giving Cross by which we have been redeemed, namely the Saracens and all other infidels whatsoever, [and how] after the city of Ceuta, situated in Africa, had been subdued by the said King John to his dominion, and after many wars had been waged, sometimes in person, by the said infante, although in the name of the said King John, against the enemies and infidels aforesaid, not without the greatest labors and expense, and with dangers and loss of life and property, and the slaughter of very many of their natural subjects, the said infante being neither enfeebled nor terrified by so many and great labors, dangers, and losses, but growing daily more and more zealous in prosecuting this his so laudable and pious purpose, has peopled with orthodox Christians certain solitary islands in the ocean sea, and has caused churches and other pious places to be there founded and built, in which divine service is celebrated....And so it came to pass that when a number of ships of this kind had explored and taken possession of very many harbors, islands, and seas, they at length came to the province of Guinea, and having taken possession of some islands and harbors and the sea adjacent to that province, sailing farther they came to the mouth of a certain great river commonly supposed to be the Nile, and war was waged for some years against the peoples of those parts in the name of the said King Alfonso and of the infante, and in it very many islands in that neighborhood were subdued and peacefully possessed, as they are still possessed together with the adjacent sea. Thence also many Guineamen and other negroes, taken by force, and some by barter of unprohibited articles, or by other lawful contract of purchase, have been sent to the said kingdoms. A large number of these have been converted to the Catholic faith, and it is hoped, by the help of divine mercy, that if such progress be continued with them, either those peoples will be converted to the faith or at least the souls of many of them will be gained for Christ.

But since, as we are informed, although the king and infante aforesaid (who with so many and so great dangers, labors, and expenses, and also with loss of so many natives of their said kingdoms, very many of whom have perished in those expeditions, depending only upon the aid of those natives, have caused those provinces to be explored and have acquired and possessed such harbors, islands, and seas, as aforesaid, as the true lords of them), fearing lest strangers induced by covetousness should sail to those parts, and desiring to usurp to themselves the perfection, fruit, and praise of this work, or at least to hinder it, should therefore, either for the sake of gain or through malice, carry or transmit iron, arms, wood used for construction, and other things and goods prohibited to be carried to infidels or should teach those infidels the art of navigation, whereby they would become more powerful and obstinate enemies to the king and infante, and the prosecution of this enterprise would either be hindered, or would perhaps entirely fail, not without great offense to God and great reproach to all Christianity, to prevent this and to conserve their right and possession, [the said king and infante] under certain most severe penalties then expressed, have prohibited and in general have ordained that none, unless with their sailors and ships and on payment of a certain tribute and with an express license previously obtained from the said king or infante, should presume to sail to the said provinces or to trade in their ports or to fish in the sea, [although the king and infante have taken this action, yet in time it might happen that persons of other kingdoms or nations, led by envy, malice, or covetousness, might presume, contrary to the prohibition aforesaid, without license and payment of such tribute, to go to the said provinces, and in the provinces, harbors, islands, and sea, so acquired, to sail, trade, and fish; and thereupon between King Alfonso and the infante, who would by no means suffer themselves to be so trifled with in these things, and the presumptuous persons aforesaid, very many hatreds, rancors, dissensions, wars, and scandals, to the highest offense of God and danger of souls, probably might and would ensue – 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, dukedoms, counties, principalities, dominions, possessions, and goods, and to convert them to his and their use and profit – by having secured the said faculty, the said King Alfonso, or, by his authority, the aforesaid infante, justly and lawfully has acquired and possessed, and doth possess, these islands, lands, harbors, and seas, and they do of right belong and pertain to the said King Alfonso and his successors, nor without special license from King Alfonso and his successors themselves has any other even of the faithful of Christ been entitled hitherto, nor is he by any means now entitled lawfully to meddle therewith – in order that King Alfonso himself and his successors and the infante.may be able the more zealously to pursue and may pursue this most pious and noble work, and most worthy of perpetual remembrance (which, since the salvation of souls, increase of the faith, and overthrow of its enemies may be procured thereby, we regard as a work wherein the glory of God, and faith in Him, and His commonwealth, the Universal Church, are concerned) in proportion as they, having been relieved of all the greater obstacles, shall find themselves supported by us and by the Apostolic See with favors and graces – we, being very fully informed of all and singular the premises, do, motu proprio, not at the instance of King Alfonso or the infante, or on the petition of any other offered to us on their behalf in respect to this matter, and after mature deliberation, by apostolic authority, and from certain knowledge, in the fullness of apostolic power, by the tenor of these presents decree and declare that the aforesaid letters of faculty (the tenor whereof we wish to be considered as inserted word for word in these presents, with all and singular the clauses therein contained) are extended to Ceuta and to the aforesaid and all other acquisitions whatsoever, even those acquired before the date of the said letters of faculty, and to all those provinces, islands, harbors, and seas whatsoever, which hereafter, in the name of the said King Alfonso and of his successors and of the infante, in those parts and the adjoining, and in the more distant and remote parts, can be acquired from the hands of infidels or pagans, and that they are comprehended under the said letters of faculty. And by force of those and of the present letters of faculty the acquisitions already made, and what hereafter shall happen to be acquired, after they shall have been acquired, we do by the tenor of these presents decree and declare have pertained, and forever of right do belong and pertain, to the aforesaid king and to his successors and to the infante, and that the right of conquest which in the course of these letters we declare to be extended from the capes of Bojador and of Não, as far as through all Guinea, and beyond toward that southern shore, has belonged and pertained, and forever of right belongs and pertains, to the said King Alfonso, his successors, and the infante, and not to any others. We also by the tenor of these presents decree and declare that King Alfonso and his successors and the infante aforesaid might and may, now and henceforth, freely and lawfully, in these [acquisitions] and concerning them make any prohibitions, statutes, and decrees whatsoever, even penal ones, and with imposition of any tribute, and dispose and ordain concerning them as concerning their own property and their other dominions. And in order to confer a more effectual right and assurance we do by these presents forever give, grant, and appropriate to the aforesaid King Alfonso and his successors, kings of the said kingdoms, and to the infante, the provinces, islands, harbors, places, and seas whatsoever, how many soever, and of what sort soever they shall be, that have already been acquired and that shall hereafter come to be acquired, and the right of conquest also from the capes of Bojador and of Não aforesaid.