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Research in trading





Access


Exchange appears, on Technologies, after you build 4 Libraries.


  • You can research the technology after you build 4 Libraries.


Construction required:

Construct Amount Requirement
Library 4 build on Buildings



Research


You can research Exchange, on Technologies, after you build 4 Libraries.


  • Effects of the technology, appear after you research it.
  • You need Food and Coin, to research Exchange.


Resources required:

Resource Quantity
Food 800
Coin 3



Effect


Effects of the technology, appear after you research it.






Library technologies
Copper tools | Pickaxe | Basic weapons | Exploration | Iron foundry | Metallurgy | Iron sword | Storage management | Currency | Coin forging | Exchange | Bronze | Bronze tools | Charcoal | Centralisation | Steel | Manufacturing | Steel tools | Husbandry | Cavalry | Leadership | Armament | Gambling | Redeem | Wrapping | Shipyard | Sailing | Trade | Cache | Specialization