Aeterni regis

The papal bull Aeterni regis, which was completed on June 21, 1481 issued by Pope Sixtus IV, confirmed the contents of the contract of Alcaçovas and thus the Castilian possession of the Canary Islands. All other acquisitions in Africa and east of it should fall to Portugal.

Inter caetera Dudum siquidem Treaty of Tordesillas
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