proposition is weakened by the revolt of the Isaurians, the independence of Britain and Armorica, the Moorish tribes, or the Bagaudae of Gaul and Spain, (vol. i. p. 328, vol. iii. p. 315, vol. iii. p. 372, 480.)] [Footnote 8000: America now contains about six millions of European blood and descent; and their numbers, at least in the North, are continually increasing. Whatever may be the changes of their political situation, they must preserve the manners of Europe; and we may reflect with some pleasure, that the English language will probably be diffused ever an immense and populous continent.] III. Cold, poverty, and a life of danger and fatigue, fortify the strength and courage of Barbarians. In every age they have oppressed the polite and peaceful nations of China, India, and Persia, who neglected, and still neglect, to counterbalance these natural powers by the resources of military art. The warlike states of antiquity, Greece, Macedonia, and Rome, educated a race of soldiers; exercised their bodies, disciplined their courage, multiplied their forces by regular evolutions, and converted the iron, which they possessed, into strong and serviceable weapons. But this superiority insensibly declined with their laws and manners; and the feeble policy of Constantine and his successors armed and instructed, for the ruin of the empire, the rude valor of the Barbarian mercenaries. The military art has been changed by the invention of gunpowder; which enables man to command the two most powerful agents of nature, air and fire. Mathematics, chemistry, mechanics, architecture, have been applied to the service of war; and the adverse parties oppose to each other the most elaborate modes of attack and of defence. Historians may indignantly observe, that the preparations of a siege would found and maintain a flourishing colony;