This has probably been answered elsewhere, but I have three questions about resources and terrain.
1) In Civ3, the only resources that were global for your empire were the luxuries and strategic resources. In Civ4 I've got other civs looking to trade me Clams for Cows. Do these resources have a global effect now as well?
2) What exactly happens with the resource when you build a city on top of it?
3) If you build your city on jungle or forest, what happens to the jungle/forest? If it gets removed, do you get the shield bonus as if it were chopped down?
1) In Civ3, the only resources that were global for your empire were the luxuries and strategic resources. In Civ4 I've got other civs looking to trade me Clams for Cows. Do these resources have a global effect now as well?
2) What exactly happens with the resource when you build a city on top of it?
3) If you build your city on jungle or forest, what happens to the jungle/forest? If it gets removed, do you get the shield bonus as if it were chopped down?