With a total land area of 1,193 square miles (3,090 square km), the Ryukyus consist of 55 islands and islets divided into three major groups: the Amami island chain in the north, the central Okinawa islands, and the Sakishima islands in the south.
With a total land area of 1,193 square miles (3,090 square km), the Ryukyus consist of 55 islands and islets divided into three major groups: the Amami island chain in the north, the central Okinawa islands, and the Sakishima islands in the south.
Along the fall line, eastern rivers break into rapids and waterfalls preventing many ships from the Atlantic Ocean from traveling further inland. Many cities were established here.