What significant event catalyzes Nora's self-discovery in "A Doll's House"?

Nora's self-discovery in "A Doll's House" is significantly catalyzed by the revelation of a past crime, specifically the forgery of her father's signature to secure a loan. This act, which she initially commits to save her husband, Torvald, from illness, becomes a pivotal moment in the narrative. As the plot unfolds, the stakes of her secret grow, leading to a profound psychological conflict. The eventual disclosure of her actions forces Nora to confront her reality and question the societal norms that have confined her to a role of subservience. It propels her to critically evaluate her marriage and her identity beyond the expectations placed upon her as a wife and mother, ultimately leading to her decision to leave Torvald in search of her true self.

While factors such as a husband's promotion, a visit from a childhood friend, or a confrontation with her father might contribute to the story’s exploration of relationships and societal pressures, it is the unveiling of her past crime that serves as the crucial turning point for Nora's transformation and awakening.