The prominent abolitionist during the American Civil War was Frederick Douglass. Born into slavery, Douglass escaped and became a leading voice in the abolitionist movement, advocating fiercely for the end of slavery and for civil rights for African Americans. He used his powerful oratory skills and writing, notably in his autobiographies, to highlight the brutal realities of slavery and to fight for racial equality. Douglass was also an influential advisor to President Abraham Lincoln and played a crucial role in pushing for the enlistment of African American soldiers in the Union Army. His legacy continues to inspire social justice movements today.