Why did the power structure of feudal japan originate to begin with?

Question

I am learning about feudal japan and i was wondering. also, how did the government control the economy and society? and to what extent did the geography help or hinder the consolidation of power in Japan's feudal development?

Answer 1

http://en.wikipedia.org/wiki/Feudalism
http://www.answers.com/topic/feudalism
http://www.answers.com/topic/japan

These websites will help out alot