Martins World generation
The Dragon Empires
The Amber and the Jade empire was originally 1 empire but after a dispute over who should inherit the throne after and untimely death made the country split itself apart.
They are well know for their centuries old bridges that you can march entire armies across and still have some room and for their two gates that appear to be as old as the bridges. These two gates hold out the denizens of the Shadows Desolation (badguy place)