What are "rights"? in what logical relation do rights stand to obligations? and, why are persons, in the specifically moral sense of that term, the only beings to have moral rights (non-persons could of course have legal rights, but i do not have any interest in hearing about that)? [do not waste time with the non-moral senses of "person".]

european feudalism was a combination of legal and military customs in medieval europe that flourished between the 9th and 15th centuries. broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

japanese feudalism. the era of feudalism in japan took place from the 12th through 19th centuries. during that period local rulers, either powerful families or military warlords, dominated the land, while the emperor was merely a figurehead and not a significant political presence.

answer; curiosity;