Fearing that she would be sold away from her family in 1849, Harriet Tubman fled to Philadelphia with the help of the Underground Railroad. Known as the "Moses" of her people, she went back to save other slaves. As one of the most well-known conductors of the railroad, Tubman rescued more than 300 slaves over 11 years.
On April 20, the U.S. Treasury Department announced that Harriet Tubman will replace Andrew Jackson on the center of a new $20 bill. The announcement comes as an effort by the Obama administration to put a woman on paper currency. According to the Obama administration, we should see more women and civil rights era leaders on more bills to come.