Originally Posted by Knight Templar
-many of the governors get vices which reduce agricultural and trade income once your empire gets large. These vices include "Family above all", "Corrupt", "Outlaw" and so once. This can't be avoided, and it seems game is programmed that way. Even if you appoint a new governor, he will get some vice of this type soon. Also, I've noticed that these vices mostly affect newly appointed governors (governors of newly conquered provinces) more often than governors of your homelands you've appointed at the beginning of the campaign)