Mystery Person:

Clue #1: I was born on November 18, 1787 in New York State. My parents were slaves.

Clue #2: My name was originally Isabella Baumfree, but I changed it.

Clue #3: I worked with abolitionists (people who worked to end slavery) such as William Lloyd Garrison and Frederick Douglass. My memoirs were published in 1850.

Clue #4: I gave speeches calling for the end to slavery, advocating for the right of women to vote, and about my experiences as a slave. After the Civil War I worked to aid the newly freed southern slaves.

Answer: Sojourner Truth