Advance
Trade Manipulation
At those key choke points where trade supremacy could go one way or another, edging out the regional competition is crucial to expanding our trade income.
Advance tree
The game files don’t say where this goes: it has no requires, so the game places it in the 
Reformation tree itself.
Modifiers
Definitionin_game/common/advances/4_choices_dip.txt:262
264icon = global_supply_limit_modifier_advance_5
265for = dip