The Korean alphabet, Hangul, was created in 1443 by King Sejong of the Joseon dynasty with a documented design rationale that explains the physical representation of sounds in its letters.

"The #Korean alphabet, called #Hangul, is the only major writing system in human history with a known inventor and a documented design rationale — created in 1443 by King Sejong of the #Joseon dynasty, who designed each consonant to physically represent the position of the tongue and lips during the corresponding sound, and published a companion document explaining exactly why each letter looked the way it did." https://spacedaily.com/d-the-korean-alphabet-called-hangul-is-the-only-major-writing-system-in-human-history-with-a-known-inventor-and-a-documented-design-rationale-created-in-1443-by-king-sejong-of-the-joseon-dyn/

The Korean alphabet, called Hangul, is the only major writing system in human history with a known inventor and a documented design rationale — created in 1443 by King Sejong of the Joseon dynasty, who designed each consonant to physically represent the position of the tongue and lips during the corresponding sound, and published a companion document explaining exactly why each letter looked the way it did https://spacedaily.com/d-the-korean-alphabet-called-hangul-is-the-only-major-writing-system-in-human-history-with-a-known-inventor-and-a-documented-design-rationale-created-in-1443-by-king-sejong-of-the-joseon-dyn/