Map of Tokugawa Japan. Being an island, Japan was less vulnerable than China to nomadic invasions & so to the operation of the Khaldunian model. So, Japan's C16 change of dynasties occurred in a different way than did China's C17 change from the Ming dynasty to the Ch'ing. In Japan, a military officer with the title of 'shogun' had usurped ultimate power from the emperor, who came to function as a figurehead. During the C14-15 a dynasty of shoguns, called the Muromachi Shogunate, exercized sovereignty over Japan. In the mid-C15 the Muromachi Shogunate became weak, so real power reverted to the shogun's provincial vassals, called 'daimyos.' The daimyos, equivalents of Europe's dukes or counts, fought among themselves during a time (1467-53) called 'the warring states period.' At last, a series of three daimyos (the third & last being named Tokugawa) from the province around Nagasaki ended the warring states period by reuniting the country under their control. Their success has been attributed to their economic wealth & to their military power. Much of their wealth came by trading with Europe (selling Japanese silk, porcelain, tea & other goods in exchange for fine woollen cloth & especially firearms). With wealth from European trade & with European firearms, the daimyos based at Nagasaki were able to conquer Japan & to establish the Tokugawa Shogunate at a new capital called Edo (later called Tokyo). So, whereas European influence had nothing to do with the rise of China's Ch'ing dynasty, it did play a role in the establishment of Japan's Tokugawa dynasty of shoguns.