During this period, the Lotus Sect was founded by Nichiren, Eisai propagated the Rinzai branch of the Zen Sect, and two unsuccessful Mongol invasions weakened the government.  
Its end began with the revolt of the emperor Daigo II, who gained power after defeating the Hojo and factions like the Kitabatake and Kusunoki.  During this period, the Lotus Sect was founded by Nichiren, Eisai propagated the Rinzai branch of the Zen Sect, and two unsuccessful Mongol invasions weakened the government.  This Japanese period was begun by Minamoto Yoritomo and named for the site of its military government.  FTP, identify this period that followed the Ashikaga period, lasting roughly from 1185-1333.
Its end began with the revolt of the emperor Daigo II, who gained power after defeating the Hojo and factions like the Kitabatake and Kusunoki.  
Kamakura period