And now about the economy, commerce and policy in this world

The economy in Zoh is based in the Treefor currency, as Gold Coins, Silver Coins and Cooper Coins, but the islands in the south have some different coins too, although the Treefor currency is the only that has value EVERYWHERE.
The commerce is done by boats and ships in the South Sea. There is a road connecting Mor and Treefor, used by caravans, and another from Mor to a harbour in the south sea. Another important thing for the commerce are the Voadores (in singular, Voador), flying machines as airships, that usually make their way between Mor, Treefor and Barreira.

Mor has the only Voadores' factory in the continent, and the largest wine production, exporting both products, and importing weapons, tools and utensils from Treefor.
Treefor has a big production of weapons and utensils, exporting both to Barreira and Mor, and importing wine from Mor. The city doesn't have a big food production, and imports it from Mor, Barreira and some little villages, but has the better bread in the continent (importing wheat from other places and processing it inside the city).
Barreira, as a militar city, imports much weapons and armors, and have a good production of both too. They have the lowest price of both things in the city. There are much mages in the city, helping defending the Walls from Kataots attacks, and to attack and conquer places beyond the Walls. The Church is strong in Barreira, but the Major General of the city, it's 'governor', don't like the Church very much, as it is always trying to arrest mages and wizards, who usually help a lot with the defense of the city. Because of this, this is the city in which the population most accepts mages, and with more of this kind of hero in all Zoh - and that makes there the best place to buy magic items and things.

Treefor is commanded by a King and a council of 9 sages, 4 from the church, 3 from choose by the King and 2 elected by the people. In fact, the people elect 100 "Escolhedores", that take care of minor things and elect 10 "Prefeitos", which one controlling 10 Escolhedores and voting for the 2 member of the council.

Mor is commanded by a group of merchants, one from each of the 10 Great Guilds of the city.

Barreira is commanded by the Major General, that controls the entire city alone, being the best soldier, named by the other minor Generals and substituted only after death (or if the generals believe he needs to leave the power).