Why did the heian period come to an end?

The Heian period came to an end due to a combination of internal strife, power struggles among the aristocracy, and the rise of the samurai class. The declining power of the imperial court and the increasing influence of military clans, particularly the Taira and Minamoto, led to civil conflicts such as the Genpei War. This culminated in the establishment of the Kamakura shogunate in 1192, shifting power from the imperial court to military leaders and marking the beginning of a new era in Japanese history.