The attention of the most casual student is arrested by the consideration of the difficulties which surrounded the English nation in its early struggles for bare existence. The great problem was, first, how to get itself into being, and thereafter how to guard against the forces of disintegration, which strove without rest to tear it to pieces again. The dawn of English history shows the beginning of that long slow process of consolidation in which unconscious reason played a deeper part than human will, whereby many discordant tribes and races, many independent provinces, were crushed together into something bearing a rude likeness to a united nation. Many forces converged in achieving this result. The coercion of strong tribes over their weaker neighbours, the pressure of outside foes, the growth of a body of law, and of public opinion, the influence of religion in the direction of peace, all helped to weld a chaos of incongruous and warring elements together. It is notable that each of the three influences, destined ultimately to aid most materially in this process of unification, threatened at one time to have a contrary effect. Thus the rivalries of the smaller kingdoms tended at first towards a complete disruption, before Wessex succeeded in asserting an undisputed supremacy; the Christianizing of England partly by Celtic missionaries from the north and partly by emissaries from Rome threatened to split the country into two, until their mutual rivalries were stilled after the Synod of Whitby in 664; and one effect of the incursion of the Danes was to create an absolute barrier between the lands that lay on either side of Watling Street, before the whole country succumbed to the unifying pressure of Cnut and his sons. The stern discipline of foreign conquest was required to make national unity possible; and, with the restoration of the old Wessex dynasty in the person of Edward Confessor, the forces of disintegration again made headway. England threatened once more to fall to pieces, but at the critical and appointed time the iron rule of the Normans came to complete what the Danes had begun half a century earlier. As the weakness of the Anglo-Saxon kings and the disruption of the country had gone hand in hand, so the process which, after the Conquest, made England one, was identical with the process which established the throne of the new dynasty on a strong, enduring basis. The complete unification of England was the result of the Norman despotism.