Historical Korean refers to the forms of the Korean language used in Korea before the modern era. It encompasses various dialects and styles that evolved over centuries, influenced by factors such as Chinese characters and Buddhism. The language underwent significant changes during the Goryeo and Joseon dynasties, leading to the development of Hangul, the native script. The study of Historical Korean is essential for understanding Korea's rich literary and cultural heritage. Important texts, such as the Samguk Sagi and Hunminjeongeum, provide insights into the language's evolution and the historical context of the time. This knowledge helps scholars and enthusiasts appreciate the depth of Korea's linguistic history.