Sicut Dudum, forbidding the enslavement of the Guanche natives in Canary Islands by the Spanish, is promulgated by Pope Eugene IV.
Sicut dudum (from Latin: "Just as Long Ago") was a papal bull promulgated by Pope Eugene IV in Florence on January 13, 1435, which forbade the enslavement of the natives of the Canary Islands who had converted, or were converting to, Christianity. Sicut dudum was meant to reinforce Creator Omnium, issued the previous year, condemning Portuguese slave raids in the Canary Islands.