Happiness
From Nova Roma Official Wiki
Happiness is a measure of your 
Citizens satisfaction with Nova Roma. It is affected by both basic needs such as food and warmth, as well as amenities and passing whims such as goods or entertainment.
A varied diet affects both health and happiness, requiring a mix of 
Wheat, 
Meat, and fruits such as 
Apples to achieve maximum values. Heating in the form of consumed 
Wood or 
Charcoal is also needed, both to keep citizens happy and to stop them from dying when temperatures plummet.
Amenities such as 
Pottery or 
Wine improve citizen's happiness, and are essential to bigger housing such as Insulas.
