African-American Harriet Tubman becomes first woman on US $20 bill

Harriet Tubman, the escaped slave who became a mainstay of the Underground Railroad, is the new face of the $20 bill, according to the Treasury Department.

Tubman is bumping incumbent Andrew Jackson off the currency .The $5 bill is also expected to change and include other civil rights leaders.Politico reports..
Presidential hopeful Hillary Clinton hailed the change, tweeting