There are some important things about Harriet Tubman that your teacher forgot to mention while you were in school. Aside from helping her family (and thousands more) escape slavery, she led troops in combat, cured a disease, and was generally way more badass than history generally portrays her.
Born Araminta "Minty" Ross in Maryland around 1822, "Harriet" adopted her mother's name after escaping slavery. She lived a remarkably full life, especially for an African-American woman of that time period. She lived to the ripe age of 91, dying at a charity home she founded in Auburn, New York. She was buried with full military honors.
1. Tubman's codename was "Moses," and she was illiterate her entire life.
She opted instead to chew on a bullet, just like Civil War soldiers did when they had a limb amputated.