SANKIN KOTAI
althought the sankin kotai system was designed to secure the permanent continuity of the tokugawa hegemony by keeping a close eye on the warrior Samurai class and thereby prevent any rebellious action in any of the domain especially the han of the outer lord .the unintended and unanticipated economic effect of sankin kotai were disastrous for that purpose but eventually proved to be highly beneficial for the long-term future of Japan Sakin kotai required that daimyo alternate year of residence in Edo and in his own domain and his wife and familywere required remain in Edo as hostage during his say in his stay in his han the extraordinary expense exacted upon daimyo his han and samurai retainers of maintaining two resident one in Edo and another with the costly transportation to and from the daimyo'han and Edo with a lage and impressive