Born into slavery, Harriet Tubman (1822-1913) escaped to be become one of the most heroic and effective activists and abolitionists leading up to the American Civil War and after. Her courageous efforts as a "conductor" on the Underground Railroad directly saved the lives of hundreds of people and inspired countless others. She is a true American hero whose courage and impact can't be overstated. And now she's the subject of a big Hollywood biopic. Harriet, directed by Kasi Lemmons and starring Cynthia Erivo, will be released November 1.