Fall of Muslim rule and unification

The Reconquista ("Reconquest") was the centuries-long period of expansion of Iberia's Christian kingdoms. The Reconquista is viewed as beginning with the Battle of Covadonga in 722, and was concurrent with the period of Muslim rule on the Iberian peninsula. The Christian army's victory over Muslim forces led to the creation of the Christian Kingdom of Asturias along the northwestern coastal mountains. Shortly after, in 739, Muslim forces were driven from Galicia, which was to eventually host one of medieval Europe's holiest sites, Santiago de Compostela and was incorporated into the new Christian kingdom. Muslim armies had also moved north of the Pyrenees, but they were defeated by Frankish forces at the Battle of Poitiers, Frankia. Later, Frankish forces established Christian counties on the southern side of the Pyrenees. These areas were to grow into the kingdoms of Navarre, Aragon and Catalonia.[21] For several centuries, the fluctuating frontier between the Muslim and Christian controlled areas of Iberia was along the Ebro and Duero valleys.