Founded in 1865 by Sakamoto Ryoma with backing from the Satsuma Domain, Kameyama Shachu is considered Japan's first commercially-oriented trading organization. Ryoma and his fellow ronin used this Nagasaki base to manage arms procurement, maritime transport, and the behind-the-scenes logistics that made the Satsuma-Choshu Alliance possible. The organization was later renamed Kaientai; it dissolved…

Kameyama Shachu is considered Japan's first commercially-oriented organization, established in 1865 by Sakamoto Ryoma on the slopes of Futatoyama in Nagasaki. After leaving the Tosa Domain as a ronin, Ryoma studied navigation under Katsu Kaishu before seeking a base in Nagasaki. With financial backi…