Moving from campaign to campaign - we have gone from approximately the Chesapeake bay to Florida, to Vermont, to Seattle area to the British Isles, roughly, for different campaigns. Greenvale, though, is the Kingdom being discussed. It is an area roughly from the North Carolina border to New Jersey, and inland almost to Ohio. (I long ago settled on a slightly tweaked real world map for my campaign world, and it really benefits me in regards to weather, natural resources, geology, etc… and travel times). Every time we come back to Greenvale we have moved 5-10 years into the future. This time, I think I have settled on a 20 year jump.