Trade | Nation management Total War: Attila Guide
Last update: 11 May 2016
One of two things is required for trading - a direct land access or a port. Land trade can be done both by roads or routes that lead through forests. Check if from a region it is possible to get to the neighbor one. If not, for example because of mountains or abandoned regions, then trading won't be possible. It is especially important in case of provinces on far east of Europe or in mountain regions, as not always they have a direct land connections. Trade via brokers - allied countries or ones trading with you - is not an option.
In case of ports it is simpler. You and your trading partner must both have access to sea. If there is an access, you can trade. Similarly as in case of land routes, trading with the help of brokers is not possible. Water trade can connect two countries in any part of Europe, as long as they have a water connection.
Trading gives profits in two categories - from duties and trading resources. Duties depend on the size of trading countries and always exist, they're the base of profits from trading for both sides. Additional profits can be gained from production and export of trading resources. Import doesn't limit profits. Trading resources are produces in every province, in a specific region, and during trading they are automatically distributed between trading partners. Long list of partners and small amount of resources make trading profits very dispersed. Duty size can be increased by expanding country territory, and the profits from resources can only be increased by upgrading buildings that creates them. Pirates and enemy fleets activity reduces trading profits. To stop pirates, you must send your own fleet on the sea and set their Stance to Patrol.