Okinawa's capital, Naha, is located in the southern part of the largest and most populous island, Okinawa Island, which is approximately half-way between Kyūshū and Taiwan.
Okinawa is a major producer of sugar cane, pineapples, papayas and other tropical fruits.
Okinawa is one of a number of Japanese islands which has been used by the United States to host nuclear arms, according to Robert S. Norris, William M. Arkin, and William Burr writing for the Bulletin of Atomic Scientists in early 2000.
Okinawa is the southern most prefecture of Japan and the main island of the Ryukyu island chain.
Permission to punish Okinawa was granted the rulers in Edo, doubtless happy that the murderous Satsuma clan was causing trouble elsewhere, to the south — not north in Tokyo.
Okinawa was the only place where there was a land battle in Japan during WW II, and it was the bloodiest battle of the Pacific War.