What is the theme of A Doll’s House? How is this relevant in today’s society?

It is impossible to place a dollar value on life. In other words, life is priceless.” How does this view create a dilemma for social decision making and effective resource allocation?
While there is the main plot of the conflict between Nora and Helmer, there are two other subplots in A Doll’s House. What are they, and how do the help us understand the main plot? Be specific in details.
What is the theme of A Doll’s House? How is this relevant in today’s society? Provide at least two examples from the play that support your answers.