What is the major conflict in The Chronicles of Narnia?

The major conflict in The Chronicles of Narnia is between the forces of good and evil, represented by Aslan and the White Witch, respectively. Aslan is the creator and protector of Narnia, while the White Witch is a powerful and evil sorceress who seeks to rule the land. The conflict between these two forces plays out across the seven books in the series, as Aslan and the children of Narnia battle the White Witch and her allies in a series of battles and adventures. The ultimate outcome of the conflict is the defeat of the White Witch and the restoration of peace and order to Narnia.