I have a trading post built in a friendly town the items I want to trade from my trading post are highlighted but nothing happens. What is the next step?Please can someone help? The original game play book does not cover trading posts and trading routes. Thank You.

Do you have room in your storehouse for the requested exchange goods and sufficient items in your storehouse for the trade?

Was there a request for a road to be built between the two cities?

Is the river frozen?

These can all have an effect on whether the trade starts.