Harriet Tubman played a crucial role in American history during the Civil War as a conductor of the Underground Railroad, leading enslaved people to freedom. Her bravery and strategic skills enabled her to guide numerous escapes, risking her life for the abolitionist cause. During the Civil War, she also served as a spy and nurse for the Union Army, using her knowledge of the South to gather intelligence and help free enslaved individuals. Tubman's tireless efforts and leadership in the fight against slavery made her an iconic figure in American history, symbolizing courage and the struggle for human rights.