Morale

Morale is the primary way to keep an empire's population happy. Approval is a planet's morale against its population, so to maximize approval one point of morale is needed per point of population.

Morale does not grow naturally per turn as population will, which means that as a planet's population increases its approval will decrease. The main way to increase morale is through the construction of approval improvements.

Coercion acts against morale acting as a dedication by the percentage of coercion experienced on the planet.