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Thrassian Plague

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The Thrassian Plague was a devastating plague originating from Thras that affected Tamriel's population and politics in the First Era.


The Thrassian Plague is believed to originate from the shores of Thras. It is seen as the most effective of the many attacks of its population, the Sload, on Tamriel.[1]

The exact time of occurrence is unclear, as the sources contradict each other. While some sources date it to the year of 1E 2200[2][1], others name the year 1E 2260[3][4], maybe simply being more accurate about the date.


The impact on Tamriel's population was devastating: More than half of the continent's population are believed to have died from the Thrassian Plague, the western coastline closest to the island of Thras being particularly affected.[2][1] Also more than half of the population of Iliac Bay was lost to the plague.[5][6]

It had also political consequences: The plague weakened the population of Valenwood so much, that it subsequently fell to the Cyrodilic Empire in 1E 2714.[7] For the province of Elsweyr, it was also the beginning of the road which finally led them under the control of the Empire, as the plague destablized the delicate balance of different tribes.[3] It also diminished the importance of the previously powerful city of Daggerfall.[8]


Accused of being the source of this plague[1], the Thrassians were subsequently defeated by the All Flags Navy of Bendu Olo of Anvil. This increased the fame of the Cyrodilic people throughout Tamriel.[2] As the Thrassian Plague also offered the opportunity for the Empire to extend its reach to the provinces of Valendwood and Elsweyr, it can be seen an important element in its rise to power.




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