Amadeus wrote:Thank you!
That means that there is a maximum limit for each structure?
Is it depending on my numbers of regions or population or something else? Will it changed somehow?
Yes, there are limits. As the USA, for example, you will have more potential Coal resources than available Coal Mine buildings. This is WAD.
You get more as your tech improves--just look at the techs for stuff like "X # of units added to the force pool." Not all of these are military units, esp. when refering to industrial techs.