International Trade Routes are a new feature introduced in the Brave New World expansion pack for Civilization V. While the former trade route concept continues to exist under the name "City Connections" (Image:20xCityConnection5.png), the new system allows you to establish long-term trading connections with other civilizations or City-States. These trade routes are supported primarily by the state, and not only by independent merchants. As such, they are established and controlled by you, via a process which is very complex. However, they are essential for the Image:20xGold5.png Gold income of your empire.