The name of the 19th-century movement advocating for the abolition of slavery in the United States was the Abolitionist Movement. This movement gained momentum during the early to mid-1800s, advocating for the immediate emancipation of enslaved people and the end of racial discrimination. Key figures included Frederick Douglass, Harriet Tubman, and William Lloyd Garrison, who used speeches, writings, and the Underground Railroad to promote the cause. The movement played a pivotal role in raising public awareness about the injustices of slavery, culminating in the Civil War and the eventual passage of the Thirteenth Amendment, which abolished slavery in the U.S.