Final answer:
Major abolitionists, such as William Lloyd Garrison and Frederick Douglass, played significant roles in the abolitionist movement by advocating for the immediate end of slavery and raising awareness about its inhumane nature.
Step-by-step explanation:
Major abolitionists who made significant contributions to the abolitionist movement in the United States include William Lloyd Garrison and Frederick Douglass. William Lloyd Garrison was a white journalist and reformer who played a leading role in advocating for the immediate end of slavery. He founded and published the anti-slavery newspaper, The Liberator, which became a powerful platform for spreading the abolitionist message. Garrison also organized and mobilized abolitionist societies and played an influential role in shaping public opinion on the issue of slavery.
Frederick Douglass was born into slavery but escaped to freedom. He became a prominent abolitionist through his powerful speeches and writings. Douglass' autobiography, Narrative of the Life of Frederick Douglass, an American Slave, helped expose the harsh realities of slavery, and his lectures and speeches inspired many to join the abolitionist cause. Douglass also worked closely with other prominent abolitionists and was an advocate for equal rights for African Americans.
Both Garrison and Douglass were instrumental in raising awareness about the issue of slavery, shaping public opinion, and pushing for the abolition of slavery in the United States.