The time period known as the Age of Cataclysms included the major events known as The Rending and The Shattering.
This age spanned 3571, the beginning of The Rending, and circa 3711, the time of The Shattering of Luclin, a duration of approximately one hundred and forty years.
It is unknown precisely how many perished in the upheavals, but it can be assumed that a significant portion of the population of Norrath was killed.