Balearic Islands having partitioned his domains between his sons in his will. The will created a new Kingdom of Mallorca from the Balearic islands and the mainland counties of Roussillon or Montpellier, which was left to his son James II. However, the terms of the will specified that the new kingdom be a vassal state to the Kingdom of Aragon, which was left to his older brother Peter. Chafing under the vassalage, James joined forces with the Pope Martin IV and Philip III of France against his brother in the Aragonese Crusade, leading to a 10-year Aragonese occupation before the islands were
Balearic Islands at 30,000. The part of the Mediterranean east of Spain, around the Balearic Isles, was called "Mare Balearicum", or "Sinus Balearicus". The Vandals under Genseric conquered the Islands sometime between 461 and 468 during their war on the Roman Empire. However, in late 533 or early 534, following the Battle of Ad Decimum, the troops of Belisarius reestablished control of the islands for the Byzantine Empire. Imperial power receded precipitately in the western Mediterranean after the fall of Carthage and the Exarchate of Africa to the Umayyad Caliphate in 698, and in 707 the islands submitted to the terms of