During the period that followed his return to Aragon, James II wanted to gain access to the Muslim world in the south, from which Castile restricted Aragon.
 In order to achieve this goal, and assisted by his Admiral Don Bernat de Sarrià, Baron of Polop, he formed an alliance with the enemies of the adolescent king of Castile, Ferdinand IV.
 James II wanted Murcia in order to give his kingdom access to Granada.
 The allied forces entered from all directions in 1296, where James II was victorious in capturing Murcia and holding it until 1304.

In 1313, James II granted administrative and political autonomy to the Aran Valley, the legal details of which are described in a Latin manuscript called the Querimonia.
The devolution of power was a reward for the Aranese pledging allegiance to James II in a dispute with the kingdoms of France and Majorca over control of the valley.

James was involved in the 1321 leper scare.
He ordered the arrest and torture of French lepers seeking shelter in his realm, and adopted harsher policy towards native lepers.
During the period that followed his return to Aragon, James II wanted to gain access to the Muslim world in the south, from which Castile restricted Aragon.  In order to achieve this goal, and assisted by his Admiral Don Bernat de Sarrià, Baron of Polop, he formed an alliance with the enemies of the adolescent king of Castile, Ferdinand IV.  James II wanted Murcia in order to give his kingdom access to Granada.  The allied forces entered from all directions in 1296, where James II was victorious in capturing Murcia and holding it until 1304.
In 1313, James II granted administrative and political autonomy to the Aran Valley, the legal details of which are described in a Latin manuscript called the Querimonia. The devolution of power was a reward for the Aranese pledging allegiance to James II in a dispute with the kingdoms of France and Majorca over control of the valley.
James was involved in the 1321 leper scare. He ordered the arrest and torture of French lepers seeking shelter in his realm, and adopted harsher policy towards native lepers.
James II of Aragon