Consider how much they would have to sacrifice in either military or essential infrastructure to do it, and it makes FAR more sense not to. Just too expensive.
In this game, anyone building the Pyramids is just begging to get them taken away. Whosit's investment in wonders is probably already too much...
In this game, anyone building the Pyramids is just begging to get them taken away. Whosit's investment in wonders is probably already too much...