Trade routes

[djenghis]

When you sign Open Borders with a civ, you can get a lot of extra commerce from trade routes: Uo to 9 or more commerce per city traded with.

What i don't understand is:
1) What determines the amount of commerce generated
2) I have all the necessary techs to trade along oceans AND open borders but still my cities don't trade with them, and we both have coastal cities.
3) The cities a city of mine trades with, changes with time.

What are the mechanics of these trade rules?

Thanks,

D.

 

[onedreamer]

1) population of the city you're trading with and various modifiers from buildings/wonders.
2) perhaps it would help to know who are "them". In case it is a foreign city, it is possible that it has all its trade routes already busy with cities bigger than yours. The biggest cities are automatically chosen.
3) that's because of what I wrote in point 2.

 

[Deego3]

Do trade routes count towards the economy rating?

 

[Power_of_Beer]

You can only have 1 trade route per foreign city, so if another civ has only 1 coastal city, only one of your cities can have a trade route to it.
Remember that trade routes dont have to be 2-sided: If u have a trade route in a foreign city, this city hasn't necessarily a trade route to you.
Trade routes are automatically assigned, you always get the best profit out of them.

 

[BurnEmDown]

Power of Beer the 1 city thing may be true but keep in mind that his other cities can have trade routes with the rest of the '1 coastal city civ', as they are considered connected.

 

[Fierabras]

Do trade routes count towards the economy rating?

If you mean economic stability, they sure do. For instance, I'm building Castles in my current game for the +1 trade route and it's really stabilizing my empire as things were getting too shaky. In vanilla BTS I hardly ever build Castles.

 

[Tibur753]

Here is an thread that explains the mechanics of trade route yield.

All possible trade routes for a city are calculated and the best one is taken. Each foreign city can have only one trade route with your empire. That means that two of your cities can't have a trade route with the same city.

Trade routes are calculated at the end of your turn, one city at a time starting with your first city that you founded. It should be the same order as you go from city screen to city screen with the arrows.

 

[onedreamer]

Do trade routes count towards the economy rating?

yes, they are the imports/exports part of the demographics screen.

Power of Beer the 1 city thing may be true but keep in mind that his other cities can have trade routes with the rest of the '1 coastal city civ', as they are considered connected.

no, they aren't considered connected because that city must be connected to them and it might not be.

 

[djenghis]

i went to worldbuiler and changed the pop of my cities to 50+. but still they didnt do trade with other civs. open borders with 4 other civs.

 

[JujuLautre]

Did you wait for one more turn? Trade routes are not computed automatically.

Also, I hope you're not in mercantilism.

 

[djenghis]

ah, i didnt click for next turn. Now it works, but apparently if the other civ has mercantillism i cant have trade routes with it either, is that so?

 

[JujuLautre]

If a civ has mercantilism, it cannot have any foreign trade routes, except with vassals. So, not with you either.