Plague of Haramiv

The Plague of Haramiv (428-422) was a pandemic that afflicted the city states of the Old Zho civilization around the time of the dissolution of said civilization, and has been pinned historically as one of the causes of the collapse of the fairly advanced cultures of the time. Affecting both the Jajazh River valley and even west into the Twin Rivers and Borizu itself, the Plague flourished in the small unsanitary cities of the time, and likely killed several million inhabitants of the Borizu Empire, depleting the Empire's manpower just as barbarians were migrating across the northern frontiers. Several recurrences between 400 B.F.B. and 200 B.F.B. lead to the deaths of several Borizu kings and the depopulation of the great city itself.