The Genpei War (1180-1185) was a significant conflict in Japan between the Taira and Minamoto clans. This war marked the end of the Heian period and was characterized by a series of battles for control over the imperial throne. The struggle was fueled by political power, land disputes, and personal rivalries, leading to widespread devastation across the country. The war culminated in the decisive Battle of Dan-no-ura in 1185, where the Minamoto clan emerged victorious. This victory established the first shogunate under Minamoto no Yoritomo, shifting power from the imperial court to military leaders. The Genpei War laid the foundation for the feudal system in Japan.