The Hangul Jamo block contains characters used in the Korean Hangul syllabary, which is the script used for writing the Korean language. Hangul is unique in that it is an alphabet that arranges its letters into syllable blocks. This block includes jamo (individual letters) that make up the syllable blocks. Hangul was created in the 15th century by King Sejong the Great and his scholars to promote literacy. It is celebrated for its scientific design and efficiency, making it one of the most rational and easy-to-learn writing systems in the world..