Although Distinguishing mark of Twelve Years a Slave is the author's free status.

Although Distinguishing mark of Twelve Years a Slave is the author's free status. Most of the slave narratives-like that of Fredrick Douglass, for example-were written by an author who had been born into slavery. How does Northup's free status shape his narrative?

-use references from the book to support the answers point.

-please use as much information from the book to answer this question.