King Sejong and the Creation of Hangeul

King Sejong, the fourth monarch of Joseon, presided over a golden age of cultural, scientific, and administrative progress. He led the invention of Hunminjeongeum (Hangeul) in 1443 to promote literacy among commoners. Sejong established the Jipheonjeon (Hall of Worthies), fostered advances in astronomy, agriculture, and medicine, and reformed the land tax system. His military policies secured northern border garrisons along the Yalu and Tumen rivers and defended southern coasts against Wokou pirates, establishing lasting foundations for Korean governance and culture.

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