I intend to write up a homebrewed campaign that exists within Pathfinder's world, and I need help finding the right location to set the story. For the campaign idea, I need an area where, on two sides directly opposite of each other, across a large expanse of open ocean. The countries that oppose each other both need to be fairly advanced, enough that both countries could conceivably build something akin to a superweapon within 100 years, perhaps with one being built by mechanical means while the other is based in magic, they need to have fairly well-known figureheads, and they need to have enough reason to go to war with each other. I would greatly appreciate any help you can offer.
