Deus Ex Machina
Nexus is the common term for the largest city in the world. Nexus is not ‘technically’ one city; it is a major trade hub at the corner of five countries. While the city itself is continuous, each country controls their own section of the city. Therefore, what law/taxation/trade depends on what section of the city you are in at the time. It was agreed upon that each sub-city be called the first three letters of the countries name. The five countries involved are Arcah, Zara, Motan, Shiff, and Syrna. In order to facilitate greater trade, Nexus is connected to the western countries by a large man-made waterway. This is on the border of Arcah and Syrna, but is not owned or regulated by either country.
Every major guild in the world has some presence in Nexus; including guilds that conduct activities that are not legal in those countries. Nexus has it’s own Mages Guild, but all the others have chapters in other cities. Living in Nexus is expensive, so most of the people trade there and don’t live in the city. This has created residential cities in all the countries; Arcah, Syrna and Shiff have the largest residential areas. Navigating Nexus is an art in itself. Even people that live there typically stay in their area of the city. The confusing nature of the city has created a group of people that make a living facilitating movement in and around Nexus.