With the conquest of Asturias by the Romans under Augustus (29–19 BC), the region entered into recorded history. The Astures were subdued by the Romans but were never fully conquered. After several centuries without foreign presence, they enjoyed a brief revival during the Germanic invasions of the late 4th century AD, resisting Suebi and Visigoth raids throughout the 5th Century AD, ending with the Moorish invasion of Spain. However, as it had been for the Romans and Visigoths, the Moors did not find mountainous territory easy to conquer, and the lands along Spain's northern coast never fully became part of Islamic Spain. Rather, with the beginning of the Moorish conquest in the 8th century, this region became a refuge for Christian nobles, and in 722, a "de facto" independent kingdom was established, the "Regnum Asturorum", which was to become the cradle of the incipient "Reconquista" (Reconquest).