Advance
Sanitation
Settlements are investing in improved sanitation measures, such as waste disposal and clean water systems. This will reduce the spread of disease, and improve the overall health of the population. The development of modern sanitation practices will make it possible for people to live in closer proximity without succumbing to disease.
Advance tree
It has no requires, so the game files don’t say where this goes. When the game builds the 
Absolutism tree, it adds this at the end of a branch with room for it, in the same spot in every campaign.
- Sanitation
Absolute Rulership then 177 more
Architectural Engineering then 25 more
Shipyards and Ironworks Only some countries
Piqûre de Marseille Only some countries
Pisan Medical Tradition Only some countries
Belongs to 1
- AbsolutismAge
Required by 5
Advances
- Absolute RulershipAbsolutismRequires
- Architectural EngineeringAbsolutismRequires
- Shipyards and IronworksAbsolutismRequires
- Piqûre de MarseilleAbsolutismRequires
- Pisan Medical TraditionAbsolutismRequires
depth = 0