Harriet Tubman accomplished remarkable feats during and after slavery. She became famous for leading around 300 enslaved individuals to freedom through the underground network known as the Underground Railroad. Her bravery and intelligence earned her the nickname "Black Moses." After the Civil War, Tubman continued her advocacy for women's suffrage and worked tirelessly to improve the rights of African Americans. She also served as a nurse and a cook during the Civil War, demonstrating her commitment to the fight for justice and equality, making her a lasting symbol of courage and resilience.