The Joseon Dynasty was a Korean dynasty that lasted for about five centuries, from 1392 to 1910. Founded by Yi Seong-gye, it is known for its significant cultural, political, and social developments. The dynasty established Confucianism as the state ideology, which influenced Korean society, education, and governance. During the Joseon period, remarkable advancements were made in various fields, including science, literature, and art. The invention of the Korean alphabet, known as Hangul, by King Sejong the Great in the 15th century is one of its most notable achievements. This period left a lasting legacy on Korean culture and identity.