In the Far East, Japan is at the same time the northern limit of the civilized world and the only archipelago whose inland sea is turned towards the east and not towards the China Sea. From this situation two major consequences rise: the dynamics of civilization takes place in the direction of north, and the history of Japan is presented in the form of an alternation meanwhile opening (predominance of the West) and time of fold (predominance of the East). If the population of the archipelago results from a synthesis between elements come from the continent and others coming from Southeast Asia (of which testify to the traces of matriarchy), the oldest inhabitants are Aïnous, groups antiquated protocaucasien. Japan would be in particular indebted for them shamanism Shinto.