Francs rhénans
During the expansion into France and Germany, many Frankish people remained in the original core Frankish territories in the north (i.e. southern Netherlands, Flanders, a small part of northern France and the adjoining area in Germany centred on Cologne). The Franks united as a single group under Salian Frank leadership around 500 AD. Politically, the Ripuarian Franks existed as a separate group only until about 500 AD, after which they were subsumed into the Salian Franks. The Franks were united, but the various Frankish groups must have continued to live in the same areas, and speak the same dialects, although as a part of the growing Frankish Kingdom.