Why was Portugal not happy about pope Alexander VI's decision in 1493?

Answer 1

The Treaty of Tordesillas was intended to resolve the dispute that had been created following the return of Christopher Columbus and his crew. In 1481, the papal bull Æterni regis had granted all land south of the Canary Islands to Portugal. On 4 May 1493 the Spanish-born Pope Alexander VI decreed in the bull Inter caetera that all lands west and south of a pole-to-pole line 100 leagues west and south of any of the islands of the Azores or the Cape Verde Islands should belong to Spain, although territory under Christian rule as of Christmas 1492 would remain untouched. The bull did not mention Portugal or its lands, so Portugal could not claim newly discovered lands even if they were east of the line. Another bull, Dudum siquidem, entitled Extension of the Apostolic Grant and Donation of the Indies and dated 25 September 1493, gave all mainlands and islands, "at one time or even yet belonged to India" to Spain, even if east of the line. The Portuguese King John II was not pleased with that arrangement, feeling that it gave him far too little land-it prevented him from possessing India, his near term goal (as of 1493, Portuguese explorers had only reached the east coast of Africa). He opened negotiations with KingFerdinand and Queen Isabella of Spain to move the line to the west and allow him to claim newly discovered lands east of the line. The treaty effectively countered the bulls of Alexander VI and was sanctioned by Pope Julius II via the bull Ea quae of 24 January 1506.[7] Even though the treaty was negotiated without consulting the Pope, a few sources call the resulting line the Papal Line of Demarcation.[8]

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