Organizing your merchants into caravans can not only protect them from being hijacked, it can also speed up the trading process considerably. In the game, this technology doubles the speed of Merchants and Merchant Barques, which means silver comes in faster.
Knowledge of the science of cartography is required in order to organize caravans.
Available to: All (requires Cartography)
Researched at: Market
Cost: 200 Food, 200 Florins