An expansive and accessible introduction to the history of Korea during the first millennium CE. Korea's Three Kingdoms period is a genuine "lost civilization, " during which ancient realms vied for supremacy during the first millennium CE. Nobles from this period's feuding states adopted and adapted Buddhism and Confucianism through interactions with early medieval Chinese dynasties. It was not until the mid-seventh century that the aristocratic Silla state, with the assistance of the mighty Chinese Tang empire, unified the Three Kingdoms of Korea by conquering the kingdoms of Koguryo and Paekche. Weaving together legends of ancient kings with the true histories of monks, scholars, and laypeople, this book sheds new light on a foundational period that continues to shape Korean identity today.