Holy Roman Empire
Roman power in Gaul declined
(Present Day France, Luxembourg, Belgium, most of Switzerland, and parts of Northern Italy, Netherlands, and Germany)
As Roman power in Gaul declined during the 5th century, local Germanic tribes assumed control. In the late 5th and early 6th centuries, the Merovingians, under Clovis I and his successors, consolidated Frankish tribes and extended hegemony over others to gain control of northern Gaul and the middle Rhine river valley region.