CityChoiceTree

Description

CityChoiceTree is the ranking for the city buildings.

Ranking 

The ranking has five primary buildings groups (E, C, A, B, S) that have to be researched/build to get to the secondary buildings in that groups.

Underneath is the five  primary buildings  groups, with the  secondary buildings  that belongs to the group
 * 1) CSustainableEnergy - Technology that produce energy
 * 2) * CWindmill, CSolarPanel
 * 3) CCity - Technology that have influence in a city
 * 4) * CFarm, CRecyclingCenter, CTrafficRegulation
 * 5) CAdministration - Decisions that have human influence
 * 6) * CMilitaryCamp, CPopulationManagement, CRefugeeAdministration
 * 7) CBioTechnology - Natures own technology
 * 8) * CPlantTree, CAlgaeStreetLamps
 * 9) CCleanIndustry Technology that makes industry cleaner
 * 10) * CFilter, CWasteManagement