Born a slave in Maryland, Harriet Tubman knew first-hand what it meant to be someone's property; she was whipped by owners and almost killed by an overseer. It was from other field hands that she first heard about the Underground Railroad which she traveled by herself north to Philadelphia. Throughout her long life (she died at the age of 92) and long after the Civil War brought an end to slavery, this amazing woman was proof of what just one person can do.