Is appeal a literary work which can only be understood in the limited context of its era?

The question contains a faulty premise. The appeal of a literary work is not constrained to the era it was produced. Timeless works often transcend their era and resonate with readers across generations and cultures, due to their universal themes, well-crafted narratives, and enduring human insights. Many literary classics, such as Shakespeare's plays or Jane Austen's novels, continue to be appreciated by readers today, despite significant cultural and societal changes since their creation.