I was thinking the other day what addition I would like most from CiV's upcoming expansion, Gods and Kings. I decided that what CiV needs is foreign trade routes. This is a feature mysteriously absent from the latest release in the Civilization series. It's even more baffling when you consider how foreign trade has been so crucial to civilizations past and present. I believe that a foreign trade mechanic can fitted into the game and deliver much more interesting gameplay and give players more incentive to be a peaceful trading empire . First off I believe that foreign trade should be available to any civilization that has signed a trade agreement with another civ. A trade agree will be available to all civs from the start of the game. You can sign it with any met civilization so long as you are at peace and have open borders. A trade agreement means a civilization will be allowed to gain gold from trade routes connected between their cities and those of their trade partners. This trade agreement also opens up opportunities to import and export. You may not trade resources with a civ you have not signed a trade agreement with. Another idea that goes along with this is the ability to transport food from city to city. If you want to build a city for production in a hilly area you have to also find somewhere where their is a good source of food. Instead though you can build many agricultural cities that produce food to feed these production or specialist cities. All moved food though loses 15% of its cargo. This penalty is negated however upon the discovery of refrigeration. A trade route is necessary to trade food. Keeping with the foreign trade route theme food can be exported and imported to or from other civilizations. Gold can be given or spent for extra food. Any comments or ideas to improve this idea are welcome.