I think it’s more the size of the USA and the abundance of its natural resources than its political system that makes it futile to blockade it. Because a count

I think it’s more the size of the USA and the abundance of its natural resources than its political system that makes it futile to blockade it. Because a country needs lots of different resources and enough people to be self-sufficient at the current level of technology, I would think almost all smaller countries can be blockaded into the mid-twentieth, if not the nineteenth century, no matter what their political system, if the blockade is held up long enough. I can’t see countries the size and population of Belgium or Peru making modern cars _and_ modern phones _and_ modern clothing _and_ modern farming tech _and_ plastic _and_ (etc) after an effective decades-long blockade, for example.