Cultural event
"The Dhakaani eventually banded together, putting all of their hefty territorial gains and martial prowess together in one place. Creating a truly massive empire, and the greatest war machine that has ever been seen on the shores of Khorvaire before or since. If a legion walked into Karrnath today, I guarantee not even the Karrnathi could stand up to them."
History of the Peoples of Khorvaire by Professor Saan of Morgrave University