Age of Civilizations 2. Each province has its own economy level. For example, the economy level of Constantinople in the 1440 scenario is 19546, while the economy of London in that same scenario is 4635. The economy level of a province can be increased by manually investing gold and spending Movement Points, or by the Economy Interface by increasing the investments slider, spending more money to increase economy, each turn by a bit. If one lowers the investments bar lower than that of a certain level, economy level decreases, much like how Population decreases with the goods bar.
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