Spherical market system with and without partitions

Imagine a global market system Production for ever as a single system without barriers Now draw boundaries looking for a bounded area that would improve local welfare by autarcky Of course you have a given distribution of real elements conditioned by years and years of global free trade Now take an existing global broken into Existing bounded restriction zones And pull away the restrictions And after say 10 years try to find a boundable sub area that could improve welfare however measured by restricting trade More ...much more needed