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Rh was occasioned by the abuse of those benevolent principles of Christianity which inculcate the natural freedom of mankind.

Maximian had no sooner recovered Gaul from the hands of the peasants, than he lost Britain by the usurpation of Carausius. Ever since the rash but successful enterprise ot the Franks under the reign of Probus, their daring countrymen had constructed squadrons of light brigantines, in which they incessantly ravaged the provinces adjacent to the ocean. To repel their desultory incursions, it was found necessary to create a naval power; and the judicious measure was pursued with prudence and vigour. Gessoriacum or Boulogne, in the streights of the British channel, was chosen by the emperor for the station of the Roman fleet; and the command of it was intrusted to Carausius, a Menapian of the meanest origin, but who had long signalized his skill as a pilot, and his valour as a soldier. The integrity of the new admiral corresponded not with his abilities. When the German pirates sailed from their own harbours, he connived at their passage, but he diligently intercepted their return, and appropriated to his own use an ample share of the spoil which they had acquired. The wealth of Carausius was, on this occasion, very justly considered as an evidence of his guilt; and Maximian had already given orders for his death. But the crafty Menapian foresaw and prevented the severity of the emperor. By his liberality he had attached to his fortunes the fleet which he commanded, and secured the barbarians in his interest. From the port of Boulogne he sailed over to Britain, persuaded the legion and the auxiliaries which guarded that island to embrace his party, and boldly assuming, with the Imperial purple, the title of Augustus, defied the justice and the arms of his injured sovereign.

When Britain was thus dismembered from the empire, its importance was sensibly felt, and its loss sincerely lamented. The Romans celebrated, and perhaps magnified, the extent of that noble island, provided on every side with convenient harbours;