Suterare Saijo wa Kazoku to Nonbiri Ikiru Koto ni Shimasu

A young woman, celebrated for her intelligence since childhood, faces betrayal just before her wedding to the crown prince, who abandons her and ends their engagement, leading to her exile. Her parents, furious over the injustice done to their daughter, leave their homeland for a neighboring country. Possessing knowledge from a past life, the woman applies her insights to develop innovative ideas. As her achievements gain attention at home and abroad, her former country recognizes the error of letting her leave.