The slavery in narnia was nothing compared to the real slavery in America. From what i’ve seen they only capture them and sell them and the ones that don’t get sold go into the mist and disappear. That is still very bad but it is not real and just a fraction of what happened in real life.
They are very different from each other for instance Slavery in america is real and the one in narnia is not real. They do not kill them in narnia but they do here. It is very cruel to both worlds but the