Merchants
From EU3 Wiki
Merchants are the agents you need to initiate trade. Each country can have up to five merchants "in stock", but can not keep any more in reserve. Merchants are the leftmost of the five "heads" at the top of the screen.
The number of merchants you get each year depends on several factors:
- Religion.
- Domestic policy sliders, specifically the Mercantilism vs. Free Trade slider.
- Possession of Centers of trade.
- Have a monopoly in a Centers of trade.
- Stability
- Being at war
In addition to the above, merchants may be gained through events, or the gain rate may be adjusted by certain triggered modifiers.

