Kamakura Shogunate

Timeline

1. 1185–1224Kamakura · Kanagawa PrefectureMinamoto no Yoritomo assumed the title of sei-i taishōgun and established the samurai-dokoro, mandokoro, and monchūjo in Kamakura, sustaining samurai order through land grants and military service obligations of the gokenin; the court remained in Kyoto but real power passed to the bakufu.
2. 1231–1240Kamakura · Kanagawa PrefectureIn 1232 Hōjō Yasutoki promulgated the Goseibai Shikimoku, a concise body of samurai law regulating relations between gokenin and manor lords, consolidating shikken rule. At the same time Goryeo suffered Mongol invasion, and the bakufu began to detect the northern threat and strengthen defenses in the Saikaidō.
3. 1235–1274Northern Kyushu · KyushuAfter the second Mongol invasion of Goryeo, the bakufu learned of northern military developments through Goryeo envoys and ordered gokenin in the western provinces to build stone fortifications and stockpile provisions; the gokenin military service system was strengthened through border mobilization, laying the groundwork for the later Bunei and Kōan campaigns.