Wikipedia
Karayuki-san
Karayuki-san was the name given to Japanese girls and women in the late 19th and early 20th centuries who were trafficked from poverty stricken agricultural prefectures in Japan to destinations in East Asia, Southeast Asia, Siberia ( Russian Far East), Manchuria, and British India to serve as prostitutes and sexually serviced men from a variety of races, including Chinese, Europeans, native Southeast Asians, and others.