The first of Japan's four conflicts was an expedition to Formosa in 1874. Insignificant from a military point of view, this affair derives vicarious interest from its effect upon the relations between China and Japan, and upon the question of the ownership of the Riukiu islands. These islands, which lie at a little distance south of Japan, had for centuries been regarded as an apanage of the Satsuma fief. The language and customs of their inhabitants showed unmistakable traces of relationship to the Japanese, and the possibility of the islands being included among the dominions of China had probably never occurred to any Japanese statesman. When therefore, in 1873, the crew of a wrecked Riukiuan junk were barbarously treated by the inhabitants of northern Formosa, the Japanese government unhesitatingly assumed the responsibility of seeking redress for their outrage. Formosa being a part of the Chinese Empire, complaint was duly preferred in Peking. But the Chinese authorities showed such resolute indifference to Japan's representations that the latter finally took the law into her own hands, and sent a small force to punish the Formosan murderers, who, of course, were found quite unable to offer any serious resistance. The Chinese government, now recognizing the fact that its territories had been invaded, lodged a protest which, but for the intervention of the British minister in Peking, might have involved the two empires in war. The final terms of arrangement were that, in consideration of Japan withdrawing her troops from Formosa, China should indemnify her to the extent of the expenses of the expedition. In sending this expedition to Formosa the government sought to placate the Satsuma samurai, who were beginning to show much opposition to certain features of the administrative reforms just inaugurated, and who claimed special interest in the affairs of the Riukiu islands. The Riukiu Complication.