the Ezo Region, before being renamed and organized as 11 provinces (1869–1882). - After the Treaty of Saint Petersburg (1875), Japan added north of Urup Island and placed , , and Districts. Gallery See also Code of Taihō Magiri Kokushi (officials) Demographics of Japan before Meiji Restoration Ritsuryō Han (administrative division) Samurai Notes References Nussbaum, Louis-Frédéric and Käthe Roth. (2005). Japan encyclopedia. Cambridge: Harvard University Press. ; OCLC 58053128 External links Detailed maps of the provinces at different times can be found at: maproom.org samurai archives 古事記における旧国名・国境 (律令制以前) 五畿八道