Final answer:
David Walker's Appeal argued for an immediate abolitionist movement and urged black people to actively resist slavery and fight for equality.
Step-by-step explanation:
The purpose of David Walker's Appeal was to argue in favor of an immediate abolitionist movement. Walker called for a unified global black voice against slavery and urged black people to actively resist slavery and fight for equality in the United States. He denounced colonization and promoted the use of violence if needed to end slavery.