https://forgottenrealms.fandom.com/wiki/Calimshan
However, in −790 DR, drow from the Underdark began raiding the emirates of Tethyr and Iltkazar in earnest, looking to acquire human slaves. These raids, known as the Night Wars, occupied Calimshan's garrisons, allowing those dissatisfied with the government to begin organized resistance against it
That's all I got. OP, you got anything more?
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