Final answer:
Frederick Douglass utilized his oratory and writing skills, along with his organizational and leadership abilities, to significantly contribute to the abolitionist movement and work against slavery.
Step-by-step explanation:
Frederick Douglass used multiple skills to work against slavery. One of his most prominent skills was his oratory skills, which he utilized as a gifted orator to captivate and educate audiences on the atrocities of slavery. His powerful narratives delivered through speeches made a significant impact on the abolitionist movement. Moreover, Douglass's writing skills were also instrumental in his fight against slavery. He authored the seminal autobiography, Narrative of the Life of Frederick Douglass, An American Slave Written by Himself, which detailed his harrowing experiences as a slave and exposed the brutality of the institution of slavery. Additionally, his organizational skills and leadership skills were evident in his ability to garner support from abolitionists both in the United States and abroad, particularly during his time in Great Britain where he secured moral and financial backing for the cause.