[1] Founded in 1921 by Haruji Matsue to exploit the new mandated territory of Micronesia, Nanko received substantial support from the colonial administration and capital from the Oriental Development Company (東洋拓殖株式會社, Tōyō Takushoku K.K.).In addition to sponsoring the immigration of over 5000 workers from Okinawa and northern Japan to the Mariana Islands, and clearing over 3000 hectares for plantations, the company also built a sugar refinery, alcohol distillation plant, ice place and a railroad.[2] In from the late 1920s and early 1930s, Nan'yō Kōhatsu developed a wide range of activities in British, Dutch and Australian territories in Southeast Asia, especially in Sulawesi and in New Guinea.As international tensions increased in the late 1930s, and following the outbreak of war in Europe, the extension of Japanese interests represented by the Nan'yō Kōhatsu greatly concerned the British, Dutch and Australian authorities.Kuribayashi negotiated with the Navy and with various insurance companies for compensation, which he partially received; however, Nan'yō Kōhatsu was abolished after the surrender of Japan by order of the Allied occupation authorities.