The king gave large estates to his friends and relatives. These estates known as the fief included houses, barns, tools, animals, and serfs or peasants. The king also promised to protect the vassal on the field or in the courts. In return the nobles who were granted the fiefs swore an oath of loyalty to the king. The nobles promised never to fight against the king. They also had to give the king whatever he asked for. The king may ask for men to fight a war, money, or advice. The nobles also gave the king a place to stay when he traveled.
Both had a feudal system
The civil war
weakness of the central government
Actually , there is no definite place.But the feudal system originated in Japan and Europe.
prolong
They wanted to be hip
They both used the feudal system. The feudal system is a kind of culture in which the knights (in Japan, Samurai) owned most of the land and were responsible to the King (in Japan, Emperor), and basically ruled over the peasants.
warrior aristocrat
dj
the trade of power/protection for loyalty/security
lack of effective central goverment
decentralized political system