The significance of Harriet Tubman's work in the Underground Railroad lies in her role as a leading abolitionist and conductor who helped enslaved people escape to freedom. Tubman, an escaped slave herself, made over 13 missions back to the South, guiding approximately 70 individuals to safety despite immense danger. Her courage and strategic planning not only saved lives but also galvanized the abolitionist movement, inspiring countless others to join the fight against slavery. Tubman’s legacy is a powerful testament to resilience and the relentless pursuit of justice, making her an enduring symbol of the struggle for civil rights.