How Did African Americans Participate in the Antislavery Movement in the Early

How did African Americans participate in the antislavery movement in the early nineteenth century?

A) They assisted white abolitionists secretly in the South and helped with direct action in the North.
B) They controlled the large antislavery societies in the North, although whites joined.
C) They led and organized antislavery societies in the Upper South.
D) Because of the prevalence of racism, they were not allowed to help at all.