Discuss:
1) the breakdown of the imperial state that lead to the Genpei Wars,
2) the various ways in which the new bipolar political order of Heian and Kamakura transformed Japan .
3) the effect of the attempted Mongol invasions,
4) the cultural legacy of the Genpei wars,
5) political, economic, and cultural developments during the Ashikaga shogunate up to the Ōnin War.