illiterate - anyone who doesn't have the capability of reading or writing
oppression - limiting a persons' or nations' rights to freedom and constricting them of doing what the want
slave code - a set of written rules and regulations for which slave owners can use to keep their slaves in check and rules every slave MUST follow
societies - a group or organization of people who have set out on living more or less peacefully with one another
ahh i'm not sure if my answers are grammatically correct but hope it checks out!