| The cost of constructing a production facility depends on the current technology level of the production facility for that good in that city. Technology cannot be improved past level 5. |
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| The cost of constructing a road link depends on the terrain in the two hexes connected by the link. N/A indicates a road may not be built in that terrain. Road links are available at the start of the simulation. |
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| The cost of constructing a canal link depends on the terrain in the two hexes connected by the link. The cost of building a canal is half its usual value if there is already a non-navigable river link between the two hexes. N/A indicates a canal may not be built in that terrain. Canal links are not available until turn 3 of the simulation. |
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| The cost of constructing a railroad link depends on the terrain in the two hexes connected by the link. N/A indicates a railroad may not be built in that terrain. Raiload links are not available until turn 6 of the simulation. |
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