The Golden Passage is a narrow strip of coastal grassland that runs through Cadria, but is a frequent trade route between Ravenna and El’Atol. El’Atol acts as a safe waystation for trade from Nyashightgaro; furs, gold, and myrrh comes out while iron, weapons, timber, and grain go in. Ravenna, being a powerful trade nation, always seeks to obtain as much of this profitable trade as possible and made diplomatic inroads with the elves by capitalizing on their discomfort with Cadria’s growing military power. These pacts grant Ravenna’s merchants favorable treatment. Cadria retaliated by creating poll taxes in the Passage for these caravans.
The harsh coast of Nyashightgaro prevents Ravenna from replacing the Passage with a sea route and so it has no choice but to use the Passage. This has lead to 2 major wars and many smaller skirmishes between Ravenna and Cadria in the past 400 years.