The method of attachment to the soil determined economic progress. Man in his early wanderings had no notion of ownership of the land. All he wished was to have room to go wherever the food quest directed him, and apparently he had no reflections on the subject. The matters of fact regarding mountain, sea, river, ocean, and glacier which influenced his movements were practically no different from the fact of other tribes that barred his progress or interfered with his methods of life. In the hunter-fisher stage of existence, human contacts became frequent, and led to contention and warfare over customary hunting grounds. Even in the pastoral period the land was occupied by moving upon it, and held as long as the tribe could maintain itself against other tribes that wished the land for pasture. Gradually, however, even in temporary locations, a more permanent attachment to the soil came through clusters of dwellings and villages, and the habit of using territory from year to year for pastorage led to a claim of the tribe for that territory. So the idea of possession grew into the idea of permanent ownership and the idea of rights to certain parts of the territory became continually stronger. This method of settlement had much to do with not only the economic life of people, but in determining the nature of their {96} social organizations and consequently the efficiency of their social activity. Evidently, the occupation of a certain territory as a dwelling-place was the source of the idea of ownership in land.