Lot Traits

Lot Traits are assigned to your lots when you build them, and may be changed once per era, with the exception of Wonders, which will always retain the original set of traits(bad traits may still be negated, however). How you determine your lot traits depends on your civilization's current Happiness. In general, bad traits are randomly determined and may be removed through technological advances or wonders, while good traits are chosen from a pool of possibilities unlocked in much the same manner.

Bad Traits
Bad traits may be negated if certain conditions are met. Negating a bad trait will remove it from the list of lot traits, but will not replace it with a good trait. If lot traits are re-rolled, a new bad trait should be determined. Bad traits relating to vampires have been removed.

Good Traits
Good traits relating to vampires have been removed.