During the establishment of the Roman power in the north of Europe, observation was not much excited toward the rapid effects of this degeneracy, compared with the fast-growing vigor of the people of the low lands. The fact of the Frisons having, on one occasion, near the year 47 of our era, beaten a whole army of Romans, had confirmed their character for intrepidity. But the long stagnation produced in these remote countries by the colossal weight of the empire was broken, about the year 250, by an irruption of Germans or Salian Franks, who, passing the Rhine and the Meuse, established themselves in the vicinity of the Menapians, near Antwerp, Breda and Bois-le-duc. All the nations that had been subjugated by the Roman power appear to have taken arms on this occasion and opposed the intruders. But the Menapians united themselves with these newcomers, and aided them to meet the shock of the imperial armies. Carausius, originally a Menapian pilot, but promoted to the command of a Roman fleet, made common cause with his fellow-citizens, and proclaimed himself emperor of Great Britain, where the naval superiority of the Menapians left him no fear of a competitor. In recompense of the assistance given him by the Franks, he crossed the sea again from his new empire, to aid them in their war with the Batavians, the allies of Rome; and having seized on their islands, and massacred nearly the whole of its inhabitants, he there established his faithful friends the Salians. Constantius and his son Constantine the Great vainly strove, even after the death of the brave Carausius, to regain possession of the country; but they were forced to leave the new inhabitants in quiet possession of their conquest. CHAPTER II FROM THE SETTLEMENT OF THE FRANKS TO THE SUBJUGATION OF FRIESLAND A.D. 250--800