i know the slavery thrall thing is popular in the boards and stuff, but i dont think they would use slaves at all for two reasons: firstly they have crude laborers in the form of automatons which secondly, they dont have to feed, which is a huge asset in country perpetually on the edge of starvation
slaves bring nothing to the table, the angleans are already the most powerful technomancers in the world, they gain nothing from stealing smart people from other places.
the food situation via independent states is interesting, but the nations around which it is most likely geologically are the least likely ideologically to suffer having to buy food from the same states. the baronies are expanding out of necessity because their population is expanding due to immigration and general prosperity, so their territory must therefore also expand. the yesha are more expressionistic than ANYONE, they expand as a matter of course.
the chaledonian island is hard to get to, like REALLY hard by water, so everything going in and out has to come by air. their ships are designed as interceptors working in squadrons likely, and they wouldn't allow anyone in who wasn't invited. the idea that they would allow anyone in is contingent on them wanting them in, which is like saying that they need someone else. they are really the ONLY faction that has their shit together, their philosophy doesn't encourage outsiders, and their resources mean they dont need outsiders. their science is advancing at a faster rate than anyone, so despite the fact that they started late, they are one of the few cultures that are building up their tech, rather than reverse engineering something they dont actually understand.
the mercantile guild comes into this as a kind of release valve, to ease hunger in places that have too little, and provide a market for surplus and raw goods. the Chaledonians need neither, and dont really like outsiders. why would they allow the MG to make a profit selling their goods, they have a perfectly good system where they create adn use their own materials to make ships and machines and the like. there is no reason they would allow mobulas to come prancing in