In 1844, she escaped from slavery.  She began guiding others to freedoom afterwards through the Underground Railroad.    The Underground Railroad was a network of anti-slavery people who arranged transport and safehouse for slaves on the run.   Harriet was the conductor of the Underground Railroad.  In fact, she led approximately 300 slaves to freedom in a decade. She was the "Moses' of her people.  
Harriet Tubman
1821-1913