From the 16th century, when the Korean peninsula was overrun by Japanese troops, its rulers made a habit of sending a present-bearing embassy to Japan to felicitate the accession of each shogun. But after the fall of the Tokugawa shogunate, the Korean court desisted from this custom, declared a determination to have no further relations with a country embracing Western civilization, and refused even to receive a Japanese embassy. This conduct caused deep umbrage in Japan. Several prominent politicians cast their votes for war, and undoubtedly the sword would have been drawn had not the leading statesmen felt that a struggle with Korea, involving probably a rupture with China, must fatally check the progress of the administrative reforms then (1873) in their infancy. Two years later, however, the Koreans crowned their defiance by firing on the boats of a Japanese war-vessel engaged in the operation of coast-surveying. No choice now remained except to despatch an armed expedition against the truculent kingdom. But Japan did not want to fight. In this matter she showed herself an apt pupil of Occidental methods such as had been practised against herself in former years. She assembled an imposing force of war-ships and transports, but instead of proceeding to extremities, she employed the squadron--which was by no means so strong as it seemed--to intimidate Korea into signing a treaty of amity and commerce, and opening three ports to foreign trade (1876). That was the beginning of Korea's friendly relations with the outer world, and Japan naturally took credit for the fact that, thus early in her new career, she had become an instrument for extending the principle of universal intercourse opposed so strenuously by herself in the past. War with China.