Final answer:
The central themes illustrated in the play's backstory are love and betrayal, along with justice and revenge, which are explored through character actions, the influence of the past, and ethical choices.
Step-by-step explanation:
The back story in the play illustrates the central themes of love and betrayal, as well as justice and revenge. When analyzing a literary work, one must consider the overarching themes as they pertain to the main characters and the central conflict. The similarities and differences in decisions and actions of characters like Mildred and Lucy can shed light on these themes, especially when considering significant past influences such as the Old South and the representation of memory and the past in the narrative structure. The role of the past can be pivotal, shaping characters' responses to events, as seen through Lucy's lack of memory regarding her decision to turn in her fiancé, suggesting complex dynamics involving love, betrayal, and the pursuit of justice or revenge. Additionally, ethical choices in the face of tragedy, as discussed in classic tragedies, can further nuance our understanding of the play's central messages.