MEDIEVAL LIFE IN EUROPE 287 pean society together. For the protection of life and property as well as the undisturbed conduct of normal social acti- vity it was necessary to improvise a new system. This was secured by the distribution and localisation of all the func- tions of government, which also necessitated a like distri- bution of authority. However, it is necessary to point out that this reorganisation of society was spontaneous and natural, and not the result of deliberate planning by any great statesman. It was derived partly from Roman and partly from Teutonic sources. In the provinces of the Roman Empire agriculture was carried on for centuries by free tenants known as the colonL But during the period of confusion these coloni tended to depend more and more upon some strong local landowner, and virtually sold their independence in retum for security. Likewise, the Teutonic custom of Commending oneself to a mighty chief, served to bring about a social system of dependence and protection. The anarchy during the ninth and tenth centuries was so great that no price was considered too big to pay for security. Indeed, even in insular Bri- tain, the daily prayer happened to be—" from the fury of the "Northmen, good Lord, deliver us." Land, which was the source of all wealth and power in those days, came to be divided and distributed for protec- tion as well as cultivation. In theory it was owned by one supreme overlord, the king; in practice it was divided and subdivided and held by a gradation of landlords and tenants. The terms on which the estates or fiefs granted by the lord to the tenant or by the tenant to the sub-tenants (vassals), were of service, both military and civil. The vassal was to fight for his lord in times of war, and to cultivate the land for him in times of peace. The latter included not merely working on one's own farm, but also