Satchō Alliance
The Satsuma–Chōshū Alliance (薩摩長州同盟, Satsuma Chōshū dōmei), or Satchō Alliance (薩長同盟, Satchō dōmei) was a powerful military alliance between the southwestern feudal domains of Satsuma and Chōshū formed in 1866 to combine their efforts to restore Imperial rule and overthrow the Tokugawa shogunate of Japan. == History == The name Satchō (薩長) is an abbreviation combining the names of the provinces Satsuma (present day Kagoshima Prefecture) and Chōshū (present-day Yamaguchi Prefecture), two of the strongest Imperialist tozama domains in Edo-period Japan.