Amid political turmoil, at the end of the Edo period, the 15th Shogun, Yoshinobu TOKUGAWA returned political power to the Imperial Court (Taisei Hokan), and diminished the legitimate reason for the movement to overthrow the Tokugawa Shogunate.
幕末の混乱した政局の中、第15代将軍徳川慶喜は朝廷に統治権を返上する大政奉還を行い、倒幕運動の大義名分を失わせた。