Question: Chagnoald, was a bishop of Laon during the 7th century, from which collection of Germanic peoples that originated in the lands between the Lower and Middle Rhine in the 3rd century AD and eventually formed a large empire dominating much of western and central Europe during the Middle Ages?
Sentence (from "History of the Netherlands"): Records begin with the four centuries during which the region formed a militarized border zone of the Roman empire.
Relevant evidence: No