The Question and Answer section for Uncle Tom’s Cabin is a great resource to ask questions, find answers, and discuss the novel.
Mr. Shelby has fallen on hard time financially and is forced to seel some of his slaves in order to bring in much needed money.
Legree threatens to kill Tom if he doesn't reveal where Cassy and Emmeline are hiding.
I'm sorry, your question cannot be answered without further information. Chapter? Incident?