- For the external trade routes introduced in Brave New World, see International trade route (Civ5).
Vanilla Civilization V and Gods & Kings Trade Routes[]
A Trade route is a link formed between a civilization's cities and its
Capital, which traders regularly use to move and conduct their trading. This might happen via land, using
roads,
railroads, or via sea, using
Harbors. A
Trade route is open with a city if one of the above-mentioned infrastructures is in place at the beginning of your turn.
Trade routes can be formed even if the connection is not direct. For example, if the
Capital has established a connection to City A via a
Harbor, and City A is connected to City B using
roads, then both cities are connected to the
Capital. As long as there is a transport chain ending in the
Capital, a
Trade route is opened and functional.
Note that for the Capital to be accessible by sea, it needs either a
Harbor built in it, or it needs a road/railroad connection to another city with a
Harbor. So, for example, a connection won't be formed if the peripheral cities have
Harbors, but the
Capital itself has no sea access.
If an enemy pillages a road or uses ships to blockade a coastal city and there are no other connections to the Capital, the
Trade routes will be lost until the roads are repaired or the ships leave or are destroyed.
Once formed, Trade routes earn certain amount of
Gold for the civilization. Every tile with a road or railroad costs
Gold per turn, meaning not all
Trade routes are necessarily profitable. The
Gold output for any
Trade route between a
Capital and a city is:
For example, with a Capital of 6
Citizens, a city with 4
Citizens produces 4.3
Gold per turn, while a city with 5
Citizens produces 5.4
Gold per turn.
Building Machu Picchu increases Gold by 25% from each
Trade route. Prior to Brave New World, Arabia increases the
Gold output of each
Trade route by 1.
Brave New World Trade Routes[]
- Main article: International trade route (Civ5)
In this expansion pack, trading has been redefined by introducing a new type of trade routes: International Trade routes. Traditional trade routes between your own cities still exist, but have been renamed
City connections, and function the same way as before. We can also think of them now as "Domestic Trading," done automatically as soon as you establish an infrastructural connection between a city and your
Capital.
The new type of trade routes may be labeled " International Trade" and are established manually - not only within your own civilization, but also with other civilizations or even
city-states. Since in Brave New World
Gold production from terrain is significantly reduced, the new trade routes become vital for maintaining your finances. Because of the complexity of the new system, it enjoys a separate article.