 The implementation of the Ritsuryō system also resulted in administrative changes, with the area of present-day Fukushima and Date being combined to form the district of Shinobu.This was the northernmost point of the Mutsu Province and held responsibility for preventing the southern expansion of the Emishi, a people who lived in northern Honshū.After 718, and the widening influence of the Yamato Imperial Court, Mutsu Province was expanded northwards into present-day Miyagi Prefecture.