What was equiano's purpose in describing the cruel treatment he witnessed on the middle passage?

Match each social group in athenian society with its description. free people, but not citizens, born outside of athens the most important group of the society, attended the assembly, could vote the lowest class of people in athens, had no rights, did manual labor had no rights, couldn’t own property, couldn’t take part in the government a - male citizens b - women c - slaves d - metics you and i really appreciate your : )