Hmm, I read the other thread, but still not convinced it's the number of times declared war, neither Larsenex's suggestions about invading minors. In that game I didn't declare war towards anybody, as I was locked in the Drengin war according to the campaign. I don't remember fighting any minors.
I'm more inclined to go with the backstory related, at least for this game.
Curiouser and curiouser!