Harriet Tubman, an African-American abolitionist well known for helping slaves escape to the North via the Underground Railroad, will replace Andrew Jackson as the new face of the $20 bill, the U.S. Treasury announced Wednesday. Tubman will be the first African-American ever to be depicted on U.S. currency as well as the first woman to be depicted in more than 100 years. The U.S. Treasury originally proposed replacing Alexander Hamilton, the first U.S. Secretary of the Treasury, on the $10 bill, but was met with backlash from the public. Instead, the Treasury decided to remove Jackson, the seventh president of the United States as well as a known slave owner. The new bill is set to be unveiled in 2020.