The gang arrives at the Great Divide, the world’s largest canyon. Two Earth Kingdom tribes bicker with each other about how to cross the canyon, having been enemies for a century. Aang helps them cross the canyon together and is able to end the feud by fabricating a story about their ancestors.
The Great Divide episode overview, Avatar Wiki, the Avatar the Last Airbender resource page
This episode overview speaks for itself, claiming that Avatar Aang ended a feud by telling a lie. Aang is made out to be the mischievous prankster who found a clever solution to solve a problem that was escalating towards violence. Nothing more is ever said in the show about the Zhang and Gan Jin, the two groups that Aang “helped”.
Even if what the Zhang and the Gan Jin were feuding about sounded ridiculous and impossible to resolve while trying respect the contradicting histories between the two, Aang’s lie wasn’t the way to handle it. As the Avatar, I think that Aang could have found out what happened between the ancestors of these two groups instead of creating a peace that is built on his lie.
In reality. telling a lie like that usually only makes tensions worse later, especially when the lie is told from someone in a position of power and influence like Aang, and I wonder if the producers of Avatar will bring up the Zhang and Gan Jin again, or a group like them, in The Legend of Korra. Not that I trust them, looking at all the issues I see and suspect in both series so far.
Like white people do to Black people throughout history and even at this moment, spreading misinformation and disinformation between conflicting groups is not only immoral, its an injustice to both groups in and of itself, especially when its clear one group is lying and clearly the oppressor/aggressor.