How do I found a corporation?
I'm trying to found the Creative Constructions corporation using a Great Engineer unit.
I've researched both the Corporation and Combustion techs. My civilization has access to Iron and Copper. I've moved my Great Engineer into a city 3 squares away from a copper mine, but the Construct (Creative Constructions) option is still disabled.
What else do I need to do to be able to construct a corporate headquarters?
You cannot found a corporation while the "State Property" civic is active. I have used freehand circles below to indicate the nature of the problem.