The historical events that shaped Harriet Tubman's biography include her experiences with slavery and the Underground Railroad. Tubman's early life of oppression ignited her passion for freedom, leading her to escape slavery and help others. Her work as a spy and nurse during the Civil War showcased her dedication to the abolitionist cause. The abolitionist movement, as well as her interactions with contemporary figures like Frederick Douglass, fueled her mission. Tubman's relentless fight for freedom and her role as a leader in the struggle against slavery cemented her legacy as an icon of courage and resilience.