The War of the 13 cities was a drow military conflict in Kazrrad fought from the 9.500 to the 8.500 b.a.h during the Early Elfic Age, between the drow city state Llurth-Negeél and their allies and vassals against a coalition of enemy drow cities. It was a devastating conflict for the drow cities, specially to the victorious Llurth-Negeél which suffered catastrophic loses in population. 

There are several theories regarding the origins of the war. The traditional view emphasizes the aggressive policy of Llurth-Negeél, while much later Negeémi revisionism since the Middle Human Age blamed the coalition of the 12 Cities, due religious causes.

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