Advance
National Trade Policy
By adopting a national trade policy, we can strengthen our commercial presence and increase the effectiveness of our trade.
Advance tree
The game files don’t say where this goes: it has no requires, so the game places it in the 
Absolutism tree itself.
Modifiers
Selling Efficiency+2.5%
Definitionin_game/common/advances/4_choices_dip.txt:357
359icon = merchant_power_from_maritime_reformation_advance
360for = dip