 Southern areas of Valencia including Denia were thus secured to Aragon.Alfonso also reached an agreement, the Treaty of Sangüesa (1168), with Sancho VI of Navarre dividing the territory of the Taifa of Murcia between them.During his reign Aragonese influence north of the Pyrenees reached its zenith, a natural tendency given the affinity between the Occitan, Catalan and Aragonese dominions of the Crown of Aragon.