I was playing a game as Egyptians, and signed a peace treaty with Aztecs. Part of their tribute was the town of Miami (they captured it from the Americans years before). As you can see there is no harbor and no airport. Yet somehow the town has four rubber resources. That's probably the number I have in my other cities, but I also have other resources. The Aztecs have 1 rubber, the road to which was destroyed this very turn. Can anyone explain this?