The biggest trade that Germany and Britain had was with each other, in the prewar period; I think I'm right in that. Two highly industrialized nations had the most trade with each other, and it wasn't tariff policies alone that made trade relations better for both of them.
Repudiating the virtues of your world, criminals hopelessly agree to organize a forbidden universe. They agree to live in it. The air there is nauseating: they can breathe it.