why would Equiano's story have been useful to the cause of abolition

Eqquino's account brought the tragedy of slavery to the greater population. Perhaps more than anything else, the work is centered around the destructiveness of the slave trade. Equiano's own life bears testament to how terribly it harms everyone involved. Africans, including children, were kidnapped from their homes and severed from their families. The bonds of mother and child, husband and wife, and brother and sister were destroyed. Slaves were given new names, their identities virtually erased. Any sense of history, culture, tradition, values, etc. were almost obliterated by the dominant society that kept them as chattel. They were subject to the most horrible punishments, delivered for capricious and unjust reasons. The chastity of female slaves was violated.