Trollwars

The Trollwars were two wars between the humans of Waterdeep and the trolls that had recently moved into the Trollmoors nearby.

First Trollwar
In 932 DR, a large population of trolls had been displaced from the Sword Mountains by the orcs after they were united under the Brotherhood of the Scarlet Scourge. The trolls attacked the city that would become known as Waterdeep and were met with retaliation by forces led by Nimoar the Reaver. The retaliatory forces burned large parts of the Evermoors, purging it of all trolls.

Second Trollwar
The second trollwar began in 940 DR and lasted until 952 DR, when Ahghairon the mage used his magical prowess to destroy all the trolls for a second time. The trolls would not return to the areas surrounding Waterdeep for over a century.