Harriet Tubman was barely 5 feet tall and didn’t have a dime to her name. What she did have was a deep faith and powerful ...

South Sudan's President Salva Kiir has sacked two of his vice-presidents, the country's spy chief and other senior officials.

Though Tubman is most famous for her successes along the Underground Railroad, her activities as a Civil War spy are less well known. As a biographer of Tubman, I think this is a shame.