Kingdom of Majorca
Soon after assuming the throne, he conducted a campaign to reincorporate the Balearic Islands into the Kingdom of Aragon – which had been lost due to the division of the kingdom by his grandfather, James I of Aragon. Thus in 1285 he declared war on his uncle, James II of Majorca, and conquered both Majorca (1285) and Ibiza (1286), effectively reassuming suzerainty over the Kingdom of Majorca. He followed this with the conquest of Menorca – until then, an autonomous Muslim state (Manûrqa) within the Kingdom of Majorca – on 17 January 1287, the anniversary of which now serves as Menorca's national holiday.