The Formation of Territorial Identity of Baden in the Early 19th Century Kodai MURAKAMI The article aims to show a key to the understanding of German national identity from an angle of the territorial state. The key is territorial identity, because the formation of national identity and territorial identity proceeded together in Germany. Baden was the typical case. While Grand Duchy of Baden had to deal with the problem of state integration in the early nineteenth century, he witnessed the nationalist movement in his own land at the same time. The article explores how Baden achieved the formation of territorial identity. And it focuses on the role of the history in the formation of Baden identity. The first section traces the expansion of Baden’s territory through the French Revolutionary Wars. Baden became five times larger than before by the early nineteenth century. The second section explores how Baden integrated new territories and people. Baden couldn’t maintain the old systems because the new territories had divergent systems. Therefore Baden needed to establish new systems: an administrative system, a financial system, a legal system, an educational system. Baden also created a new “tradition” in order to provide its government with legitimacy. This tradition was underscored by history of the sovereign. The third section analyzed Badische Geschichte, one of histories which were based on the new tradition. The history was allocated another role by Grand Duchy. Badische Geschichte functioned as a history textbook to instill Baden identity in people’s mind through the new education system.