The Koryo Dynasty was a Korean dynasty that ruled from 918 to 1392. It was founded by Wang Geon, who later became known as King Taejo. The dynasty is notable for its advancements in culture, technology, and the establishment of a centralized government. The name "Koryo" is the origin of the modern name "Korea." During the Koryo Dynasty, the country saw the development of the Korean script, known as Hangul, and the flourishing of Buddhism. The dynasty is also famous for its exquisite celadon pottery and the creation of the Tripitaka Koreana, a comprehensive collection of Buddhist scriptures.