|Languages||Ryukyuan (native languages), Classical Chinese|
|Religion||native Ryukyuan religion, Buddhism, Confucianism, Taoism|
|Legislature||Shuri Ō-fu (首里王府), Sanshikan (三司官)|
|-||Satsuma invasion||April 5, 1609|
|-||Annexed by Japan||March 11, 1879|
|Area||2,271 km² (877 sq mi)|
|Today part of||Japan|
|¹ Ming and Qing dynasties.|
The Lewchew Kingdom (traditional Chinese: 琉球國; simplified Chinese: 琉球国; pinyin: Liúqiú Guó; Historical English name: Lewchew, Luchu; Japanese: 琉球王国 Ryūkyū Ōkoku; Ryukyuan: 琉球國 Ruuchuu-kuku;) was an independent kingdom which ruled most of the Ryukyu Islands from the 15th century to the 19th century. The Kings of Ryukyu unified Okinawa Island and extended the kingdom to the Amami Islands in modern-day Kagoshima Prefecture, and the Sakishima Islands near Taiwan. Despite its small size, the kingdom played a central role in the maritime trade networks of medieval East and Southeast Asia.
Origins of the Kingdom 
In the 14th century, small domains scattered on Okinawa Island were unified into three principalities: Hokuzan (北山, Northern Mountain), Chūzan (中山, Central Mountain) and Nanzan (南山, Southern Mountain). This was known as the Three Kingdoms or Sanzan (三山, Three Mountains) period. Hokuzan, which constituted much of the northern half of the island, was the largest in terms of land area and militarily strong, but was economically the weakest of the three. Nanzan constituted the southern portion of the island. Chūzan lay in the center of the island, and was economically the strongest. Its political capital at Shuri, Nanzan was adjacent to the major port of Naha and Kanemura, the center of traditional-Chinese education. These sites, and Chūzan as a whole, would continue to form the center of the Ryukyu Kingdom until its abolition.
Many Chinese moved to Ryukyu to serve the government or to engage in business during this period. At the request of the Ryukyuan King, the Ming Chinese sent 36 Chinese families from Fujian to manage oceanic dealings in the kingdom in 1392 during the Hongwu emperor's reign. Many Ryukuan officials were descended from these Chinese immigrants, being born in China or having Chinese grandfathers. They assisted the Ryukyuans in advancing their technology and diplomatic relations. According to statements by Qing imperial official Li Hongzhang in a meeting with Ulysses S. Grant, China had a special relationship with the island and the Ryukyu had paid tribute to China for hundreds of years, and the Chinese reserved certain trade rights for them in an amicable and beneficial relationship.
These three principalities, or tribal federations, led by major chieftains, battled, and Chūzan emerged victorious, and the Chūzan leaders were officially recognized by Ming dynasty China as the rightful kings over those of Nanzan and Hokuzan, thus lending great legitimacy to their claims, if not victory outright. The ruler of Chūzan passed his throne to King Hashi; Hashi conquered Hokuzan in 1416 and Nanzan in 1429, uniting the island of Okinawa for the first time, and founded the first Shō Dynasty. Hashi received the surname "Shō" (Chinese: "Shang") 尚 from the Ming emperor in 1421, becoming known as Shō Hashi (Chinese: Shang Bazhi) 尚巴志.
Shō Hashi adopted the Chinese hierarchical court system, built Shuri Castle and the town as his capital, and constructed Naha harbor. When in 1469 King Shō Toku, who was a grandson of Shō Hashi, died without a male heir, a palatine servant declared he was Toku's adopted son and gained Chinese investiture. This pretender, Shō En, began the Second Shō Dynasty. Ryukyu's golden age occurred during the reign of Shō Shin, the second king of that dynasty, who reigned from 1478 to 1526.
The kingdom extended its authority over the southernmost islands in the Ryukyu archipelago by the end of the 15th century, and by 1571 the Amami-Ōshima Islands, to the north, near Kyūshū, were incorporated into the kingdom as well. While the kingdom's political system was adopted, and the authority of Shuri recognized, in the Amami-Ōshima Islands, however, the kingdom's authority over the Sakishima Islands to the south remained for centuries at the level of a tributary-suzerain relationship.
Golden age of maritime trade 
For nearly two hundred years, the Ryukyu Kingdom would thrive as a key player in maritime trade with Southeast and East Asia. Central to the kingdom's maritime activities was the continuation of the tributary relationship with Ming Dynasty China, begun by Chūzan in 1372, and enjoyed by the three Okinawan kingdoms which preceded it. China provided ships for Ryukyu's maritime trade activities, allowed a limited number of Ryukyuans to study at the Imperial Academy in Beijing, and formally recognized the authority of the King of Chūzan, allowing the kingdom to trade formally at Ming ports. Ryukyuan ships, often provided by China, traded at ports throughout the region, which included, among others, China, Đại Việt (Vietnam), Korea, Japan, Java, Malacca, Pattani, Palembang, Siam, and Sumatra.
Japanese products—silver, swords, fans, lacquerware, folding screens—and Chinese products—medicinal herbs, minted coins, glazed ceramics, brocades, textiles—were traded within the kingdom for Southeast Asian sappanwood, rhino horn, tin, sugar, iron, ambergris, Indian ivory and Arabian frankincense. Altogether, 150 voyages between the kingdom and Southeast Asia on Ryukyuan ships were recorded in the Rekidai Hōan, an official record of diplomatic documents compiled by the kingdom, as having taken place between 1424 and the 1630s, with 61 of them bound for Siam, 10 for Malacca, 10 for Pattani and 8 for Java, among others.
The Chinese policy of hai jin (海禁, "sea bans"), limiting trade with China to tributary states and those with formal authorization, along with the accompanying preferential treatment of the Ming Court towards Ryukyu, allowed the kingdom to flourish and prosper for roughly 150 years. In the late 16th century, however, the kingdom's commercial prosperity fell into decline. The decline of the wokou ("Japanese pirate") threat among other factors led to the gradual loss of Chinese preferential treatment; the kingdom also suffered from increased maritime competition from Portuguese traders.
Japanese invasion and subordination 
Around 1590, Toyotomi Hideyoshi asked the Ryukyu Kingdom to aid in his campaign to conquer Korea. If successful, Hideyoshi intended to then move against China. As the Ryukyu Kingdom was a tributary state of the Ming Dynasty, the request was refused. The Tokugawa shogunate that emerged following Hideyoshi's fall authorized the Shimazu family—feudal lords of the Satsuma domain (present-day Kagoshima prefecture)—to send an expeditionary force to conquer the Ryukyus. The subsequent invasion took place in 1609. Occupation occurred fairly quickly, with a minimum of armed resistance, and King Shō Nei was taken as prisoner to the Satsuma domain and later to Edo (modern day Tokyo). When he was released two years later, the Ryukyu Kingdom regained a degree of autonomy; however, the Satsuma domain seized control over some territory of the Ryukyu Kingdom, notably the Amami-Ōshima island group, which was incorporated into the Satsuma domain and remains a part of Kagoshima prefecture, not Okinawa prefecture, today.
Tributary relations 
The Ryukyu Kingdom found itself in a period of "dual subordination" to Japan and China, wherein Ryukyuan tributary relations were maintained with both the Tokugawa shogunate and the Ming Chinese court. In 1655, tribute relations between Ryukyu and Qing Dynasty (the dynasty that followed Ming on 1644) were formally approved by the shogunate. This was seen to be justified, in part, because of the desire to avoid giving Qing any reason for military action against Japan.
Since Ming China prohibited trade with Japan, the Satsuma domain, with the blessing of the Tokugawa shogunate, used the trade relations of the kingdom to continue to maintain trade relations with China. Considering that Japan had previously severed ties with most of the European countries except the Dutch, such trade relations proved especially crucial to both the Tokugawa shogunate and Satsuma domain which would use its power and influence, gained in this way, to help overthrow the shogunate in the 1860s.
Ryukyu was given a great degree of autonomy, to best serve the interests of the Satsuma daimyō and those of the shogunate, in trading with China. Ryukyu was a tributary state of China, and since Japan had no formal diplomatic relations with China, it was essential that Beijing not realize that Ryukyu was controlled by Japan. Thus, ironically, Satsuma—and the shogunate—was obliged to be mostly hands-off in terms of not visibly or forcibly occupying Ryukyu or controlling the policies and laws there. The situation benefited all three parties involved—the Ryukyu royal government, the Satsuma daimyo, and the shogunate—to make Ryukyu seem as much a distinctive and foreign country as possible. Japanese were prohibited from visiting Ryukyu without shogunal permission, and the Ryukyuans were forbidden from adopting Japanese names, clothes, or customs. They were even forbidden from divulging their knowledge of the Japanese language during their trips to Edo; the Shimazu family, daimyo of Satsuma, gained great prestige by putting on a show of parading the King, officials, and other people of Ryukyu to and through Edo. As the only han to have a king and an entire kingdom as vassals, Satsuma gained significantly from Ryukyu's exoticness, reinforcing that it was an entire separate kingdom.
In 1872, the Japanese tributary kingdom was reconfigured as the Ryukyu Domain. At the same time, the fiction of independence was maintained for diplomatic reasons until the Meiji Japanese government abolished the Ryukyu Kingdom when the islands were incorporated as Okinawa Prefecture on March 11, 1879.
The Amami-Ōshima island group which had been integrated into Satsuma domain became a part of Kagoshima prefecture.
The last king of the Ryukyus was forced to relocate to Tokyo, and was given a compensating kazoku rank as Marquis Shō Tai. His death in 1901 diminished the historic connections with the former kingdom.
Major events 
- 1372 The first Ming dynasty envoy visits Okinawa, which had been divided into three kingdoms, during the Sanzan period. Formal tributary relations with the Chinese Empire begin.
- 1416 Chūzan, led by Shō Hashi, occupies Nakijin gusuku, capital of Hokuzan.
- 1429 Chūzan occupies Shimajiri Osato gusuku, capital of Nanzan, unifying Okinawa Island. Shō Hashi establishes the Kingdom of Ryukyu, ruling as king with his capital at Shuri (now part of modern-day Naha).
- 1470 Shō En (Kanemaru) establishes the Second Shō Dynasty.
- 1477 The third king, Shō Shin, ascends to the throne. Golden age of the kingdom.
- 1609 (April 5) daimyō (Lord) of Satsuma in southern Kyūshū conquers the kingdom. King of Ryukyu becomes a Japanese vassal.
- 1624 Lord of Satsuma annexes the Amami Islands.
- 1846 Dr. Bernard Jean Bettelheim (d. 1870), a British Protestant missionary, arrives in Ryukyu Kingdom. He establishes the first foreign hospital on the island at the Naminoue Gokoku-ji Temple.
- 1853 Commodore Matthew Perry of the US Navy visits the kingdom. Bettelheim leaves with Perry.
- 1866 The last official mission from the Qing Empire visits the kingdom.
- 1872 The Japanese government unilaterally abolished the Ryukyu Kingdom, and declared the islands to be the Ryukyu Han (Ryukyu fief), with Shō Tai (尚泰) as the head of the fief 藩王 (Han'ō).
- 1874 The last tributary envoy to China is dispatched from Naha.
- 1879 Japan replaces the Ryukyu han with Okinawa Prefecture, formally annexing the islands. The former monarch is granted the Japanese title of marquis (侯爵) and relocated to Tokyo.
List of Ryukyuan kings 
|Name||Kanji||Reign||Line or Dynasty||Notes|
|Shō Shishō||尚思紹||1407–1421||First Shō Dynasty|
|Shō Hashi||尚巴志||1422–1429||First Shō Dynasty||as King of Chūzan|
|Name||Kanji||Reign||Line or Dynasty||Notes|
|Shō Hashi||尚巴志||1429–1439||First Shō Dynasty||as King of Ryukyu|
|Shō Chū||尚忠||1440–1442||First Shō Dynasty|
|Shō Shitatsu||尚思達||1443–1449||First Shō Dynasty|
|Shō Kinpuku||尚金福||1450–1453||First Shō Dynasty|
|Shō Taikyū||尚泰久||1454–1460||First Shō Dynasty|
|Shō Toku||尚徳||1461–1469||First Shō Dynasty|
|Shō En||尚円||1470–1476||Second Shō Dynasty||AKA Kanamaru Uchima|
|Shō Sen'i||尚宣威||1477||Second Shō Dynasty|
|Shō Shin||尚真||1477–1526||Second Shō Dynasty|
|Shō Sei||尚清||1527–1555||Second Shō Dynasty|
|Shō Gen||尚元||1556–1572||Second Shō Dynasty|
|Shō Ei||尚永||1573–1586||Second Shō Dynasty|
|Shō Nei||尚寧||1587–1620||Second Shō Dynasty||ruled during Satsuma invasion; first king to be Satsuma vassal|
|Shō Hō||尚豊||1621–1640||Second Shō Dynasty|
|Shō Ken||尚賢||1641–1647||Second Shō Dynasty|
|Shō Shitsu||尚質||1648–1668||Second Shō Dynasty|
|Shō Tei||尚貞||1669–1709||Second Shō Dynasty|
|Shō Eki||尚益||1710–1712||Second Shō Dynasty|
|Shō Kei||尚敬||1713–1751||Second Shō Dynasty|
|Shō Boku||尚穆||1752–1795||Second Shō Dynasty|
|Shō On||尚温||1796–1802||Second Shō Dynasty|
|Shō Sei (r. 1803)||尚成||1803||Second Shō Dynasty|
|Shō Kō||尚灝||1804–1828||Second Shō Dynasty|
|Shō Iku||尚育||1829–1847||Second Shō Dynasty|
|Shō Tai||尚泰||1848 – March 11, 1879||Second Shō Dynasty||last Ryukyu King|
|Shō Shōken||向象賢||1666–1673||Sessei (prime minister)||first Ryukyuan historian; lived 1617–1675|
|Sai On||蔡温||1711–1752||State instructor/regent||major Ryukyuan scholar and historian; lived 1682–1761|
See also 
- Foreign relations of Imperial China
- Genealogy of the Shō Dynasties
- History of Amami Islands
- History of Ryukyu Islands
- History of Sakishima Islands
- Hua-Yi distinction
- Invasion of Ryukyu
- List of monarchs of Ryukyu Islands
- Mudan Incident of 1871
- Ryukyu independence movement
- Ryukyu Islands
- Ryukyuan missions to Edo
- Ryukyuan missions to Imperial China
- Ryukyuan missions to Joseon
- Ryukyuan people
- Tamaudun (intact royal tombs)
- Shih-shan Henry Tsai (1996). The eunuchs in the Ming dynasty (illustrated ed.). SUNY Press. p. 145. ISBN 0-7914-2687-4. Retrieved 2011-02-04.
- Angela Schottenhammer (2007). In Angela Schottenhammer. The East Asian maritime world 1400–1800: its fabrics of power and dynamics of exchanges. Volume 4 of East Asian economic and socio-cultural studies: East Asian maritime history (illustrated ed.). Otto Harrassowitz Verlag. p. xiii. ISBN 3-447-05474-3. Retrieved 2011-02-04.
- Gang Deng (1999). Maritime sector, institutions, and sea power of premodern China. Volume 212 of Contributions in economics and economic history (illustrated ed.). Greenwood Publishing Group. p. 125. ISBN 0-313-30712-1. Retrieved 2011-02-04.
- Katrien Hendrickx (2007). The Origins of Banana-fibre Cloth in the Ryukyus, Japan (illustrated ed.). Leuven University Press. p. 39. ISBN 90-5867-614-5. Retrieved 2011-01-11.
- John Y. Simon, ed. (2008). The Papers of Ulysses S. Grant: October 1, 1878 – September 30, 1880. Volume 29 of The Papers of Ulysses S. Grant (illustrated ed.). SIU Press. p. 165. ISBN 0-8093-2775-9. Retrieved 2011-01-11.
- Matsuda. p. 16.
- Murai. pp. iv–v.
- Okamoto, Hiromichi. "Foreign Policy and Maritime Trade in the Early Ming Period Focusing on the Ryukyu Kingdom." Acta Asiatica vol. 95 (2008), p. 35.
- Nanzan and Hokuzan also entered into tributary relationships with Ming China, in 1380 and 1383 respectively. (Okamoto, Hiromichi. "Foreign Policy and Maritime Trade in the Early Ming Period: Focusing on the Ryukyu Kingdom." Acta Asiatica vol. 95 (2008), p. 36.
- Okamoto, p. 36.
- Sakamaki, Shunzō. "Ryukyu and Southeast Asia." Journal of Asian Studies. vol. 23 no. 3 (May 1964), pp. 382–4.
- Murai, Shōsuke. "Introduction." Acta Asiatica vol 95 (2008). Tokyo: The Tōhō Gakkai (The Institute of Eastern Culture), p. iv.
- Okamoto, p. 53.
- Klaproth, Julius. (1832). San kokf tsou ran to sets, ou Aperçu général des trois royaumes, pp. 169-180.
- Kang, David C. (2010). East Asia Before the West: Five Centuries of Trade and Tribute, p. 81. at Google Books
- Matsuo, Kanenori Sakon. (2005). The Secret Royal Martial Arts of Ryukyu, p. 40. at Google Books; Kerr, George H. (1953). Ryukyu Kingdom and Province before 1945, p. 175.
- Lin, Man-houng. "The Ryukyus and Taiwan in the East Asian Seas: A Longue Durée Perspective," Asia-Pacific Journal: Japan Focus. October 27, 2006, translated and abridged from Academia Sinica Weekly, No. 1084. August 24, 2006.
- Goodenough, Ward H. Book Review: "George H. Kerr. Okinawa: the History of an Island People ...," The Annals of the American Academy of Political and Social Science, May 1959, Vol. 323, No. 1, p. 165.
- Papinot, Jacques. (2003). Nobiliare du Japon – Sho, p. 56 (PDF@60); see also Papinot, Jacques Edmond Joseph. (1906). Dictionnaire d’histoire et de géographie du Japon.
- Kerr, Ryukyu Kingdom, p. 236.
- Hamashita, Takeshi. Okinawa Nyūmon (沖縄入門, "Introduction to Okinawa"). Tokyo: Chikuma Shobō, 2000, pp. 207–13.
- Kang, David C. (2010). East Asia Before the West: Five Centuries of Trade and Tribute. New York : Columbia University Press. 13-ISBN 9780231153188/10-ISBN 023115318X; 13-ISBN 9780231526746/10-ISBN 0231526741; OCLC 562768984
- Kerr, George H. (1958). Okinawa: the History of an Island People. Rutland, Vermont: Charles Tuttle Co. OCLC 722356
- ___________. (1953). Ryukyu Kingdom and Province before 1945. Washington, D.C.: National Academy of Sciences, National Research Council. OCLC 5455582
- Matsuda, Mitsugu (2001) The Government of the Kingdom of Ryukyu, 1609–1872: a dissertation submitted to the Graduate School of the University of Hawaii in partial fulfillment of the requirements for the degree of Doctor of Philosophy, January 1967, Gushikawa : Yui Pub., 283 p., ISBN 4-946539-16-6
- Nussbaum, Louis-Frédéric. (2002). Japan Encyclopedia. Cambridge: Harvard University Press. 10-ISBN 0-674-01753-6; 13-ISBN 978-0-674-01753-5; OCLC 48943301
- Smits, Gregory (1999) Visions of Ryukyu: identity and ideology in early-modern thought and politics, Honolulu : University of Hawaii Press, 213 p., ISBN 0-8248-2037-1
|Wikimedia Commons has media related to: Ryukyu Kingdom|
- History of Okinawa
- (Japanese) 沖縄の歴史情報(ORJ) Many Ryukyu historical texts.
- Brief History of the Uchinanchu (Okinawans)
- National Archives of Japan: Ryukyu Chuzano ryoshisha tojogyoretsu, scroll illustrating procession of Ryukyu emissary to Edo, Hōei 7 (1710)