After the conclusion of the War, Aang and Zuko brought people from the four nations together and founded the United Republic, creating Republic City, a large “metropolis powered by steampunk-type technology” such as cars and motorcycles. Aang and Katara had three children, the youngest of which is Tenzin, who has been confirmed to be an airbender. Meanwhile, Toph Beifong traveled extensively to teach metalbending. After Aang’s death, the next Avatar, Korra, was born in the S

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