Harriet Tubman was an American abolitionist, humanitarian, and an armed scout and spy for the United States Army during the American Civil War. Born into slavery, Tubman escaped and subsequently made some thirteen missions to rescue approximately seventy enslaved families and friends, using the network of antislavery activists and safe houses known as the Underground Railroad. She later helped abolitionist John Brown recruit men for his raid on Harpers Ferry, and in the post-war era was an active participant in the struggle for women's suffrage. Born a slave in Dorchester County, Maryland, Tubman was beaten and whipped by her various masters as a child. Early in life, she suffered a traumatic head wound when an irate slave owner threw a heavy metal weight intending to hit another slave and hit her instead. The injury caused dizziness, pain, and spells of hypersomnia, which occurred throughout her life. She was a devout Christian and experienced strange visions and vivid dreams, which she ascribed to premonitions from God. In 1849, Tubman escaped to Philadelphia, then immediately returned to Maryland to rescue her family. Slowly, one group at a time, she brought relatives with her out of the state, and eventually guided dozens of other slaves to freedom. Traveling by night and in extreme secrecy, Tubman "never lost a passenger". After the Fugitive Slave Act of 1850 was passed, she helped guide fugitives farther north into British North America, and helped newly freed slaves find work. When the Civil War began, Tubman worked for the Union Army, first as a cook and nurse, and then as an armed scout and spy. The first woman to lead an armed expedition in the war, she guided the raid at Combahee Ferry, which liberated more than 700 slaves. After the war, she retired to the family home on property she had purchased in 1859 in Auburn, New York, where she cared for her aging parents. She was active in the women's suffrage movement until illness overtook her and she had to be admitted to a home for elderly African Americans that she had helped to establish years earlier. After she died in 1913, she became an icon of American courage and freedom. On April 20, 2016, the U.S. Treasury Department announced a plan for Tubman to replace Andrew Jackson as the portrait gracing the $20 bill.

https://en.wikipedia.org/wiki/Harriet_Tubman