Avatar: The Last Airbender - History [Past Avatars] #3: Master of the Elements, Bridge Between Humans and Spirits. - Fan Forum

How soon after Aang ran away did the Fire Nation attack? If Aang never ran away, would he have been able to master all 4 elements in time? - Quora

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Beginnings, Part 1, Avatar Wiki

Montages: International Edition » The Last Airbender, Part I: Harmony of elements

Beginnings, Part 1, Avatar Wiki

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What is the big purple Aang shown when he unlocks the 7th chakra? - Quora

The Avatar, master of all four elements : r/ATLA

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How soon after Aang ran away did the Fire Nation attack? If Aang never ran away, would he have been able to master all 4 elements in time? - Quora