Arda is a fictional world created by author J.R.R. Tolkien, serving as the setting for his famous works, including The Hobbit and The Lord of the Rings. It is a richly detailed universe with its own geography, history, and languages, inhabited by various races such as Elves, Dwarves, and Men. The history of Arda is divided into several ages, each marked by significant events and characters. The first age features the struggle against the dark lord Morgoth, while the later ages focus on the rise and fall of Sauron and the quest for the One Ring.