*[[Kamakura shogunate|Shogunate]] officials in [[Dazaifu (city)|Dazaifu]] receive a message from Kublai Khan demanding Japan submit to Mongol authority or be invaded. The shogunate takes various steps to strengthen defenses in Kyushu. | *[[Kamakura shogunate|Shogunate]] officials in [[Dazaifu (city)|Dazaifu]] receive a message from Kublai Khan demanding Japan submit to Mongol authority or be invaded. The shogunate takes various steps to strengthen defenses in Kyushu. |