Answer:
the elements are Water, Earth, Fire, Air. Long ago the 4 nations lived together in harmony, then everything changed when the fire nation attacked. Only the avatar, master of all 4 elements could stop them, but when the world needed him most, he vanished. A hundred years past and my brother and I found a new avatar. An airbender named Aang, and although his airbending skills are great he still has a lot to learn. But I believe Aang can save the world.
Explanation:
