As the warrior class separated from the Emperor and the aristocratic class and became a distinct entity in itself, it created the bakufu out of its search for a new method of government; this ushered in the age of feudal government in Japan.
武士階級が天皇・貴族階級と分離し新たな支配体制を求めて幕府を開き、封建政治を始めた時代である。