Age of Empires Series Wiki

Emphasis on commercial pursuits gives you 2,000 experience points towards your next Shipment.
—In-game description

Mercantilism is a technology in Age of Empires III that can be researched at the Church. As soon as it is researched, the player will receive 2,000 XP.

Despite the upgrade text, the XP given is likely to provide at least two shipments. See the XP page for more details on the XP required per shipment.

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