Kingdom of Goryeo
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938 Jan 1

Goryeo subjugates Kingdom of Tamna

Jeju, South Korea

Tamna briefly reclaimed its independence after the fall of Silla in 935. However, it was subjugated by the Goryeo Dynasty in 938, and officially annexed in 1105. However, the kingdom maintained local autonomy until 1404, when Taejong of Joseon placed it under firm central control and brought the Tamna kingdom to an end.