She wanted to sell him down south so they can work him harder, and to also got paid more for him.
Jim ran away because he heard that Miss Watson was going to sell him to someone in the South.
Jim's legal owner was Miss Watson.
Jim heard that Miss Watson planned to sell him since she needed money and he was a slave; and was afraid his new master might mistreat him.
miss Watson
Miss Watson
He belongs to Miss Watson at the beginning of the story. Later, when he runs away, he declares that he owns himself. However, Jim still officially is owned by Miss Watson until she dies and in her will she declares that Jim be a free man.
Miss Watson's Slave.
miss Watson's slave
Jim, a slave on Miss Watson's plantation. Miss Watson is who Huck lives with.
he was a slave of miss watson
I assume you're talking about The Adventures of Huckleberry Finn. Jim's owner was Miss Watson, the sister of Huck's guardian ("the widder Douglas"). However, by the end of the novel Jim is free.
The chapter title "I Spare Miss Watson's Jim" in "Adventures of Huckleberry Finn" is significant because it highlights Huck's internal struggle with societal norms and his growing moral conscience. Huck decides not to turn Jim, Miss Watson's slave, in despite being taught that it is the right thing to do. This moment marks Huck's defiance of the accepted morality of his time and foreshadows his further moral development throughout the novel.