Okinawa a used to be a kingdom called Ryukyu, but in 1879 Japan forcibly occupied it.

冲绳岛以前是一个叫琉球的王国，但是1879年日本强占了它。

youdao

On its front would be a picture of the famous Shureimon gate of the Shurijo castle in Naha, the home of the former rulers of the Ryukyu kingdom before it was annexed by Japan in the 17th century and renamed Okinawa.

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