The Choshu Domain was a feudal domain in Japan during the Edo period, located in the western part of Honshu. It was centered around present-day Yamaguchi Prefecture and was known for its strategic location and strong samurai culture. The domain played a significant role in the political landscape of Japan, particularly during the late Edo period. Choshu was influential in the movement to overthrow the Tokugawa shogunate and restore imperial rule, contributing to the Meiji Restoration in the 1860s. The domain was home to notable figures such as Kido Takayoshi and Saigo Takamori, who were key players in Japan's modernization efforts.