As I stated previously, Toni Morrison uses historical information as inspiration as she writes her books. She reminds the readers aspects that are either neglected, forgotten, or overlooked in history classes or personal knowledge. This allows those silent voices to have their day in the community and acknowledge their experiences. Maybe as the readers gain insight on these aspects of historic situations, they will consider it as they interact with this portion of society. As Toni Morrison demonstrates, though these situations are in the past, they still affect the present within this portion of the community, but also assumptions of other sides of the society.
I would suggest listening to any of her interviews because she does a great job describing the her personal purpose of writing particular books, her expectations that will be fulfilled once read, and so on. I know that I hope to add a book or so while I teach English Literature and hope to inspire someone to research more on the historical topic and create a more dominant interest in the topic, time frame, and on.