The origins of the Doctrine of Discovery can be traced back to a Papal Bull (proclamation) issued by Pope Nicholas V in 1452. In it he proclaimed that it was permissible for Christians to claim lands held by non-Christians because only Christians were entitled to hold lands. In 1493, one year after the barbarian Christopher Columbus got lost and landed in the Americas, Pope Alexander VI extended to Spain the right for it to conquer newly-found lands by issuing the papal bull Inter Caetera. This was after Christopher Columbus had already begun appropriating for Spain the lands of the Indigenous People of the Americas. Arguments between Portugal and Spain led to the Treaty of Tordesillas, which clarified that only non-Christian lands could thus be taken, as well as drawing a line of demarcation to allocate potential discoveries between the two powers. It must be noted that in spite of their hatred for the Catholic Church, European Protestant Nations adopted the warped Bulls of the Popes with great enthusiasm, and applied them as enthusiastically as the Catholics did when stealing Indigenous lands.