Tema has a free market system which encourages competition between cities and regions to exploit resources and bring in wealth. Taxes are heavy and plentiful, and resistance to them is met with fierce violence from the Nantli.
The Nantli have agreed on a common system of coinage, with Gold, Silver, and Copper coins bearing the faces of the three remaining Nantli. Older electrum pieces can sometimes be found with the visage of one of the deceased Nantli.
Commerce varies by region, but fishing, mining, and farming are common professions.