Final answer:
Harriet Tubman caused a ripple effect by aiding in the liberation of enslaved individuals, influencing abolitionist activism and literature, and fostering stronger African American communities.
Step-by-step explanation:
Harriet Tubman, often referred to as “American Moses,” had an enormous impact on the fight against slavery and the broader course of American history. Her personal bravery and unyielding dedication to liberating enslaved individuals had several ripple effects that changed the nation's perception and approach to slavery. Not only did she physically lead over three hundred individuals to freedom through the Underground Railroad, but her actions also sparked increased activism and unity among abolitionists. The stories of Tubman and others who escaped from slavery created a narrative that challenged the institution of slavery and supported the development of stronger African American communities resilient to outside prejudice.
Furthermore, the publication of novels like Uncle Tom's Cabin by Harriet Beecher Stowe, which were influenced by the real-life experiences of individuals like Tubman, stirred public sentiment and exacerbated the sectional tensions that would eventually lead to the Civil War. Tubman’s actions also contributed to a growing consciousness among both Black and White individuals that would carry on past the Civil War, influencing the trajectory of Civil Rights movements and societal attitudes towards racial equality.