powerful Andō clan (安東氏) of northern Japan in a war that lasted from 1268 to 1328 called the Ezo Rebellion (蝦夷大乱). The war, which was described by the 13th century Japanese Buddhist monk Nichiren as a disaster on par with the Mongol invasion of Japan in 1274 and 1281, caused the Andō clan to splinter and might even have contributed to the fall of the ruling Kamakura shogunate in Japan. Despite the commonly accepted cause of the war being trade disagreements and religious differences between the Ainu and the Andō clan, Mongol action in Sakhalin might have had a hand in creating and amplifying the conflict. The so-called "Mongol invasion of Japan from the north" was therefore an indirect one at most, in the opinion of Kazuyuki Nakamura. See also Mongol invasions of Japan References Notes Works cited Further reading 13th-century conflicts 13th century in the Mongol Empire 1310s in the Mongol Empire Ainu history Military history of Manchuria History of Sakhalin Sakhalin Nivkh Wars involving the Yuan dynasty Wars involving Imperial China