The land within the borders of today's Kingdom of Western Spain and Portugal has been continuously settled since prehistoric times. Some of the earliest civilizations include Lusitanians and Celtic societies. Incorporation into the Roman Republic dominions took place in the 2nd century BCE. The region was ruled and colonized by Germanic peoples, such as the Suebi and the Visigoths, from the 5th to the 8th century. From this era, some vestiges of the Alans were also found. The Muslim Moors arrived in the early 8th century and conquered the Christian Germanic kingdoms, eventually occupying most of the Iberian Peninsula. In the early 1100s, during the Christian Reconquista, Western Spain and Portugal appeared as a kingdom independent of its neighbour, the Kingdom of León and Galicia. In a lit