Sosurim

king of Koguryŏ

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July 14, 2026

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King Sosurim reigned from 371 to 384 CE and was a significant ruler of Goguryeo, one of the three ancient kingdoms of Korea. During his reign, Sosurim enacted laws and decrees that centralized royal authority, transforming Goguryeo into a fully developed aristocratic state. This period also saw the introduction of Buddhism in 372 CE, which provided ideological support for the centralized bureaucracy, and the growing emphasis on Confucian education to maintain social order. Goguryeo's territory expanded significantly in later reigns, encompassing parts of northern Korea and northeastern China.1

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Goguryeo
With the promulgation by King Sosurim (reigned 371–384) of various laws and decrees aimed at centralizing royal authority, Goguryeo emerged as a full-fledged aristocratic state. Its territory was extended greatly during the reign of King Gwanggaeto (391–412) and further by Jangsu (reigned 413–491). The entire northern half of the Korean…
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With the promulgation by King Sosurim (reigned 371–384) of various laws and decrees aimed at centralizing royal authority, Goguryeo emerged as a full-fledged aristocratic state. Its territory was extended greatly during the reign of King Gwanggaeto (391–412) and further by Jangsu (reigned 413–491). The entire northern half of the Korean…
Read More