How much trade does the iron throne do? Like what percentage of gdp would a typical medieval state have as imports and exports? What does this trade consist of? And how effected would westeros be if it were completely cut off from the rest of the world?
Well, if @warsofasoiaf asks…
The Iron Throne doesn’t do much trade itself, since it’s a government that derives most of its revenues from taxes as opposed to trading directly on its own account. Yes, Littlefinger has gotten into the wool trade, for example, but it’s unclear how much if any of that revenue actually goes to the crown instead of to Littlefinger.
If you’re asking how much international trade Westeros does, I think it’s rather low given that A. the overwhelming majority of the population works in subsistence agriculture, B. as Westeros is rather underdeveloped, there are severe limits to the spread of markets due to the inability to get goods to market, and C. Westeros’ exports are almost entirely natural resources (food, wine, wool, timber, etc.) and its imports are higher valued-added manufacturing.
If you’re asking for a percent GDP figure, there are estimates that 16th century England had a foreign trade of less than 8% and that was after a huge surge in the wool trade and we haven’t seen in Westeros anything like the social and economic transformation that the rise of the commercial wool trade had on England from the 14th through 16th centuries. Likewise, I’ve seen estimates that the agrarian economy (i.e, just that part of the economy that came from producing crops) made up 85% or more of English GDP in 1300, which also suggests a low figure for Westeros.