In civ 5 brave new world, if I build an academy, and then several turns later, I research oil, does the academy automatically grant me that oil if the oil is underneath it?
In one game I was playing, it appeared to be the case, because when I removed the academy to put in my oil rig, I kept the same amount of oil. But I might have been getting oil from the city-states, they were so in flux that I couldnt keep track of what I was getting from them all the time.