Ryukyu Kingdom
The Ryukyu Kingdom is a country that no longer exists in present-day Okinawa. Before Japan took control of it during the Meiji Era, it was an independent country with its own culture, government, and language from 1429 to 1879.  Okinawa was a major trading center in Asia, so there are aspects of Chinese, Japanese, and other Asian cultures that were blended into the native Okinawan culture.