Advance
Smithian Economics
By opposing mercantilism and restricting the state's influence in economic matters, we shall support a free market that will increase our overall production efficiency.
Advance tree
The game files don’t say where this goes: it has no requires, so the game places it in the 
Revolutions tree itself.
Modifiers
Definitionin_game/common/advances/4_choices_adm.txt:397
399icon = efficient_mining
400for = adm