Final answer:
William Wells Brown was an influential figure in the nineteenth century who played a significant role in bringing about change through his powerful narratives and writings as an abolitionist and advocate for the rights of African Americans.
Step-by-step explanation:
William Wells Brown was an influential figure in the nineteenth century who played a significant role in bringing about change. As an African American abolitionist and writer, Brown used his powerful narratives and writings to advocate for the end of slavery and the rights of African Americans. His book 'Narrative of William W. Brown' exposed the horrors of slavery and the domestic slave trade, which served as a catalyst for change and contributed to the growing abolitionist movement. Brown's story and activism resonated with many people, influencing public opinion and helping to shape the social and political landscape of the time.