Why where slaves not allowed to learn to read or write

Slave owners were afraid that they would contain the knowledge of learning to escape from the plantations, so the slave owners wouldn't allow them to learn to read or write.

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.

is it multiple choice