Okinawa Island (The Ryukyus) is a chain over 1,000 kilometers long. Naha, Okinawa’s capital, is located around 1500km (955 miles) South West from Tokyo (2:30 hrs flight)
Okinawans are known for theirlongevity. Individuals live longer on this Japanese island than anywhere else in the world. Five times as many Okinawans live to be 100 as in the rest of Japan, and Japanese are already the longest-lived ethnic group globally.
In 1609, the Ryūkyū Kingdom was obliged to agree to form a tributary relationship with the Satsuma and the Tokugawa Shogunate. Four years after the 1868 Meiji restoration, the Japanese government, through military incursions, officially annexed the kingdom and renamed it Ryukyu Han. Ryukyu Han became Okinawa Prefecture of Japan in 1879, even though all other Hans had become prefectures of Japan in 1872.
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