Usan
State in East Asia (512–930)
title: "Usan" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["former-countries-in-korean-history", "former-monarchies-of-east-asia", "history-of-korea", "states-and-territories-established-in-the-510s", "512-establishments", "930s-disestablishments", "states-and-territories-disestablished-in-the-930s", "former-island-countries"] description: "State in East Asia (512–930)" topic_path: "geography" source: "https://en.wikipedia.org/wiki/Usan" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary State in East Asia (512–930) ::
::data[format=table title="Infobox country"]
| Field | Value |
|---|---|
| native_name | 우산국 (于山國) |
| conventional_long_name | Usan |
| common_name | Usan |
| status | Kingdom |
| year_start | ? |
| year_end | 1022 |
| event2 | Subjugation by Silla under General Isabu |
| date_event2 | 512 |
| event3 | Submission to Goryeo |
| date_event3 | 930 |
| event_end | Incorporation into Goryeo |
| s1 | Goryeo |
| government_type | Monarchy |
| leader_title1 | King |
| today | South Korea |
| ∟ Ulleungdo | |
| module | {{Infobox Korean name/auto |
| hangul | ^우산국 |
| hanja | 于山國 |
| child | yes |
| :: |
| native_name = 우산국 (于山國) | conventional_long_name = Usan | common_name = Usan | status = Kingdom | year_start = ? | year_end = 1022 | date_start = | event2 = Subjugation by Silla under General Isabu | date_event2 = 512 | event3 = Submission to Goryeo | date_event3 = 930 | event_start = | event_end = Incorporation into Goryeo | p1 = | s1 = Goryeo | image_flag = | flag = | flag_type = | capital = | common_languages = | religion = | government_type = Monarchy | leader_title1 = King | today = South Korea ∟ Ulleungdo | module = {{Infobox Korean name/auto | hangul=^우산국 | hanja=于山國 |child=yes Usan-guk or the State of Usan () was a statelet that occupied the island Ulleungdo and several adjacent islands in Korea during the Three Kingdoms period. According to the Samguk sagi, it was conquered by the Silla general Kim Isabu in 512. He is said to have used wooden lions or tigers to intimidate the residents into surrendering. It has been written that the alias of Usan-guk is Ulleung-do. Usan-guk rarely entered into historical records, but appears to have continued a largely autonomous existence until its loss of independence to Goryeo in 930.
History
Historical records
thumb|280px|right|Samguk sagi Book 04. Silla's Records. In 512, Usan-guk（于山國）was [[Ulleungdo]]（鬱陵島） Earliest records that appear in the Records of the Three Kingdoms indirectly attest the existence of the kingdom, which says "When Wang Qi (王頎) (of Cao Wei) has come to Okjeo to conquer Kung (Dongcheon of Goguryeo), he asked a local man whether there are people living in the east sea, and the man replied there are people living in an island that exists in the eastern seas, and they select a girl to put in the ocean every July."
In Samguk sagi, it is said that because of general Isabu's threats with wooden lions, Usan chose to be a vassal state to Silla in 512.
In Goryeosa, it is recorded that Usan requested to be submitted under the rule of Goryeo in 930 by sending Paekkil () and T'odu (). In 1018, when Usan was severely affected by Jurchen invasions, the Goryeo king sent Yi Wŏn'gwi () with farming equipment, and asked the locals of Usan who have fled from those invasions to return to their lands. Usan was finally abolished and fully incorporated in 1022 as all of the refugees from Usan were settled to the region of Yeju.
Old Korean maps
File:Ulleungdo and Usando.jpg|Joseon map (1530): Ulleungdo (鬱陵島) and Usan (于山島) File:Gwang Yeodo 18th century.jpg|廣輿圖 (Gwang Yeodo,1737-1776) This map showed Ulleungdo with a small island off its eastern shore labeled as "the so-called Usando" (所謂 于山島). File:East of Ulleungdo and Usando.jpg|Kim Jeong-ho "Daedongyeojido" (1861): East of Ulleungdo (鬱陵島) and Usando (于山) File:DaehanJeondo.jpg|A map by the Korean Empire: Ulleungdo (鬱陵島) and Usan (于山)
References
References
- (December 29, 2011). "General Isabu of Silla Kingdom Incorporated Dokdo into Korean History".
- [https://www2.jiia.or.jp/en/pdf/digital_library/Takai_takeshima.pdf The Alleged Title over the Island of Takeshima Invoked by the Republic of Korea] jiia.or.jp Retrieved 28 July 2023
- "The National Assembly of the Republic of Korea".
- [[Records of the Three Kingdoms]], Book 30
- Bong-Ryong, Kang. (2010). "Biography of Isabu and historical implications of his activities. The review of Isabu and east sea".
- ''[[Samguk sagi]]'', Book 4
- Kim, Myung-Ki. (2010). "A Study on the Legality of the Conquest over Usanguk by General Isabu of Shilla in International Law. The review of Isabu and east sea".
- [[Goryeosa]], Book 1
- [[Goryeosa]], Book4
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