The roots of Polish history can be traced to the Iron Age, when the territory of present-day Poland was settled by various tribes including Celts, Scythians, Germanic clans, Sarmatians, Slavs and Balts. However, it was the West Slavic Lechites, the closest ancestors of ethnic Poles, who established permanent settlements in the Polish lands during the Early Middle Ages. The Lechitic Western Polans, a tribe whose name means "people living in open fields", dominated the region, and gave Poland - which lies in the North-Central European Plain - its name.