"Copper Sun" by Sharon Draper (click for my response)

I put this one off because I usually find stories about slavery depressing. How could anyone treat someone else like that! But, the great story and surprising historical details saved it. It is set earlier than a lot of slavery stories, more than 100 years before the Civil War. The relationships between the characters really showed how complex the issues were- no simplistic answers. I ended up not being able to put it down. A good book to read if you like history.