sentences:  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.Sugar cane became the primary industry of Saipan and by the mid-1930s the company exported over twelve million yen of sugar to mainland Japan.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.