how did the tokugawa shoguns kept control of daimyo during the period of their rule
Tokugawa shogunate The emperor, nominally a religious leader, held no real power; this was invested in the shōgun. The shogunate had the power to discard, annex, and transform domains. The sankin-kōtai system of alternative residence required each daimyō to reside in alternate years between the han and the court in Edo. During their absences from Edo, it was also required that they leave family as hostages until their return. The huge expenditure sankin-kōtai imposed on each han helped centralize aristocratic alliances and ensured loyalty to the shōgun as each representative doubled as a potential hostage.
Emperor Meiji Emperor Meiji (明治天皇, Meiji-tennō, November 3, 1852 – July 30, 1912), or Meiji the Great (明治大帝, Meiji-taitei), was the 122nd Emperor of Japan according to the traditional order of succession, reigning from February 3, 1867 until his death on July 30, 1912. He presided over a time of rapid change in the Empire of Japan, as the nation quickly changed from an isolationist feudal state to a capitalist and imperial world power, characterized by the Japanese industrial revolution.