The occasion was propitious to the realization of the ambitious designs of Alfonso. The emirate was temporarily vacant through the absence of Okbah, its head, in Africa. Anarchy, with all its nameless horrors, prevailed in every portion of the Peninsula. The territory acquired in France, whose occupation had shed so much lustre on the Moslems and whose possession was designed as the preliminary step to the subjugation of Europe, had, through the valor of the Franks and the incapacity and jealousies of the emirs, with the solitary exception of the city of Narbonne, been wrested from the conqueror. The prestige of the heretofore invincible Saracens had been lost by repeated reverses, crowned by the terrible misfortune of Poitiers. In Galicia and the Basque provinces the peasantry had delivered the greater portion of their country from the enemy and were in full sympathy with the plans and aspirations of their Asturian neighbors, although they resolutely kept aloof from political union with them and declined to acknowledge the authority of their king. The operations of Alfonso were characterized by the activity and judgment of an experienced partisan. Passing suddenly into Galicia he surprised Lugo, which had remained in the hands of the Arabs since its capture by Musa, and soon afterwards occupied the strongly fortified city of Tuy, appropriating the territory north of the river Minho by the right of conquest. Thence he penetrated into Lusitania, taking some of the principal towns of that province and extending his march to the eastward until he had overrun all of the region lying to the north of the range of mountains now known as the Sierra Guadarrama.