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The Tengu Wars is the name of a great war between the humans and the Tengu of Cantha. It is believed to have been started after a territory dispute. The Humans and the Tengu celebrate the anniversary of the cessation of hostilities as the Day of the Tengu. Master Togo negotiated the peace treaty that ended the Tengu Wars

The mission The Tengu Accords in the Guild Wars Bonus Mission Pack covers how the war ended.