Tōsandō

is a Japanese term for both an ancient division of the country and the main road running through the region.Nussbaum, Louis-Frédéric. (2005). "Goki-shichidō" in Japan Encyclopedia, p. 255.  

History
Tōsandō was one of the main circuits of the Gokishichidō system.  It was first established during the Asuka period. Over centuries, the government functions of the Gokishichido became less important. However, the traditional eight regions, including Tōsandō, remained cultural markers. 

Geography
Tōsandō is in the central mountains of northern Honshū. It is made of eight ancient provinces,Sale, George et al. (1759).  "Japan," An Universal history, from the earliest account of time, Vol. 30, p. 72.  including
Ōmi ProvinceTitsingh, Isaac. (1834). Annales des empereurs du japon, p. 57.
Mino Province
Hida Province
Shinano Province
Kōzuke Province
Shimotsuke Province
Mutsu Province
Dewa Province

After 711, Tōsandō was understood to include Musashi province.Nussbaum,  "Tōsandō" at p. 988.

The lands of many prefectures are in the region of Tōsandō: Akita, Aomori, Fukushima, Fiu, Gunma, Iwate, Miyagi, Nagano, Shiga and Tochigi prefectures.

 Related pages 
 Tōhoku region
 Comparison of regions of Japan

References

Category:Regions of Japan