During the Muromachi period, such a trend was accelerated, the shugo-ryogoku system (in which shugo, or provincial constable, controlled the province) was formed by shugo daimyo (Japanese territorial lord as provincial constable), and then entering into the Sengoku Period (period of warring states) (in Japan), the daimyo-ryogoku system (a system whereby a daimyo controlled a feudal domain) was developed by daimyo (Japanese territorial lord) during the Sengoku Period.
こうした動きは室町時代に入ると一層加速していき、守護大名による守護領国制が形成され、さらに戦国時代(日本)の戦国大名による大名領国制へ発展していった。