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 Sea Balearic Sea The Balearic Sea (endotoponym: "Mar Balear" in Catalan and Spanish) is a body of water in the Mediterranean Sea near the Balearic Islands. It is not to be confused with the Alboran sea or the Iberian shelf waters. The Ebro River flows into this small sea. Baleraic islands are divided into 2 groups : Gimnesias in the North, and Pitiusas in the South-West. The International Hydrographic Organization defines the limits of the Balearic Sea as follows: Between the Islas Baleares and the coast of Spain, bounded: "On the Southwest." A line from Cape San Antonio, Spain () to