Under the rulership of Jagar Tharn, the Arnesian War would take place. House Dres, a Great House of Morrowind found in the southern part of the province, had been gathering Argonian slaves from northern Black Marsh for generations, as a means to sustain its agrarian agricultural society, due to its saltrice plantations relying solely on slave labor.
As such, the war found its origins in a slave revolt in the lands of House Dres, one of the Great Houses of Morrowind. Just before the war would break out, a group of Argonians had captured Roris, who was loyal to the Tribunal faith, even following torture by the Argonian sorcerers. A desire of revenge and justice for Saint Roris would become the rallying cry for the war, and as such, Morrowind declared war. The swamplands of southern Morrowind would become home to a bloody war between Argonians and Dunmer, and during the war the Imperial General Symmachus was slain.
- Portions of northern Black Marsh were conquered by Morrowind.
- These areas would slowly be reclaimed following the outlawing of slavery.
- Barenziah renounced her claim on the province of Morrowind, and fled to the city of Wayrest.
- Roris, the Dunmer trader, was canonized by the Tribunal, becoming the patron saint of furnishers and caravaners.