By the middle of the Muromachi period the system of the shugo daimyo in the shogunate was enlarged, and it was possible to describe the Muromachi shogunate as a so-called coalition government of shugo daimyo.
室町中期までに、幕府における守護大名の権能は肥大化し、幕府はいわば守護大名の連合政権の様相を呈するようになる。