These yields are not drained from the host city, but additionally produced. When a city has a Granary (for Food) or a Workshop (for Production), a caravan can be used to trade the respective yields to another city in that Civilization. Trade units can also be used to increase both Food and Production yields of a Civilization's city.

The trade units are also vulnerable to attack whilst making their way along their trade routes, and must be protected from barbarians and enemy Civilizations. Trade units are limited in range, and each Civilization has a limit on the amount of trade routes that can be active at once. These trade routes will bring in Gold to both parties, and additional effects like religious pressure and bonus science. 2 new economic units, the Caravan and the Trade Ship, can be used to establish trade routes between both other Civilizations and City-States. While domestic city connections remains unchanged, Brave New World adds a new economic level with international trading and caravans. New Additions International Trade Trade Options All game mechanics introduced in Gods & Kings will be present in Brave New World, but not the Civilizations and game scenarios. There are nine new civilizations, eight new wonders, and two new scenarios in the package.

Brave New World reintroduces international trade, last seen in Civilization IV, and revamps the game's Cultural and Diplomatic victories. It was released on Jin North America and Jin Europe for the PC and Mac. The second expansion to Sid Meier's Civilization V, Brave New World, was announced on March 15, 2013.

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