evidence: Sakhalin/Karafuto - Naoki AmanoNaoki AmanoFaculty of Humanities and Social Sciences, Yamagata University, JAPAN The modern history of Sakhalin Island, a border island between Russia and Japan, has been one of demarcation, colonization, re-demarcation, and refugee resettlement, with a total of four demarcations and re-demarcations since the late 19th century, the first through diplomatic negotiations and the remaining three through war. One of the most significant features of the modern history of the border island is that each time the sovereignty of the islands changed, the population was completely replaced. Four major events shaped the history of Sakhalin Island: the Treaty of St Petersburg of 1875, which de-bordered the island from the traditional international system of East Asia and incorporated it into the modern international system of the West; the Russo-Japanese War of 1905, which resulted in the Japanese acquisition of the southern half of the island; the end of the five-year military occupation of northern Sakhalin by the Japanese in 1925; and the Soviet occupation of southern Sakhalin in 1945. Through each of these occasions, a holistic picture of the modern history of the Russo-Japanese border island can be discerned by focusing on the mobility of its inhabitants, how the inhabitants became displaced and were forced to leave their homes, and how the island was settled by the new sovereigns who replaced them.