
[Series 1: The Zenkunen War and the Gosannen War] Why did the Oshu Wars occur at the end of the Heian period?.
Also known as the "Twelve Years' War of Oshu," this battle, which took place at the end of the Heian period between Mutsu and Dewa, now Iwate and Akita prefectures, was not just a local battle but also served as a bridge to the Kamakura period...











