Korean monarchs were the rulers of the Korean Peninsula throughout its history, particularly during the Goryeo and Joseon dynasties. The Goryeo dynasty, which lasted from 918 to 1392, is known for its cultural achievements and the establishment of a centralized government. The Joseon dynasty followed, lasting from 1392 to 1910, and is recognized for its Confucian ideals and advancements in science and technology. The monarchs played a crucial role in shaping Korea's political landscape, culture, and society. Notable kings include Sejong the Great, who created the Korean alphabet, Hangul, and Gwanggaeto the Great, known for expanding the territory of the Goguryeo kingdom. The influence of these monarchs is still evident in modern Korean culture.