Anglo-Saxon Institutions. 449-1066 71 Ethelred II., this policy resulted in a marked decentralisa- tion; each earl regulated the affairs of his locality to suit himself, concerted action was destroyed, and a situation created that made possible the conquest of England by the Danes. Under the strong Cnute, the earls were kept under control, but the system of local powers, as estab- lished by Edgar, was not rooted out; and under Edward the Confessor a few great earls attained a power unknown before. Since the Danish invasion of Alfred's time, a racial distinction had existed between northern and southern England. This division was now intensified by coinciding roughly with the territories controlled by great families of earls. The existence of a north and south England and the final bitter jealousy between the houses of Leofric and Godwin constituted an important negative cause of the Norman Conquest. Apparently too great a strain had been placed upon the Anglo-Saxon central government; that which served in Northumbria, Mercia, or even Wessex, did not suffice for all England, especially in time of war and rapidly changing economic conditions. The central government was not in a healthy condition in the eleventh century, and perhaps England was due to pass through a further stage of feudal decentralisation when she was rescued by the extraordinary results of the Norman Conquest. But what needs especial emphasis in conclusion is that there was yet a healthy if primitive local government. It was healthy because the mass of the English population was still neither too high nor too low to be the ones to work it, and because it was the cus- tom of the country to expect most of the governing—most of what served roughly to protect people's lives and property—to be done not by officials or even the land- lords, but by the people themselves.