Answer:
D- all of the above
Explanation:
Although present earlier to some degree, the feudal system in Japan was really established from the beginning of the Kamakura Period in the late 12th century CE when shoguns or military dictators replaced the emperor and imperial court as the country's main source of government.
The shoguns of medieval Japan were military dictators who ruled the country via a feudal system where a vassal's military service and loyalty was given in return for a lord's patronage
