Rework this text to be more logical:
In about 300 AD, a Germanic settlement was the first permanent town on a complex of low river dunes. Many such settlements were abandoned in the early Middle Ages, Zutphen on its strategic confluence of IJssel and Berkel stayed.
In about 300 AD, a Germanic settlement was the first permanent town on a complex of low river dunes. Whereas many such settlements were abandoned in the early Middle Ages, Zutphen on its strategic confluence of IJssel and Berkel stayed.