Final answer:
Frederick Douglass showed courage by writing and publishing his autobiography, which exposed the horrors of slavery and made him a target for re-enslavement or death.
Step-by-step explanation:
Frederick Douglass demonstrated remarkable courage by publishing his autobiography, Narrative of the Life of Frederick Douglass, An American Slave. Despite the significant personal risk it posed, including possible re-enslavement or death, Douglass detailed his experiences to reveal the brutal reality of slavery to a wider audience. His work was a crucial contribution to the abolitionist movement, and he became a prominent figure by engaging in public lectures and eventually seeking support from international antislavery networks.