[gasbag]

I don't think the US would stop trading with Puerto Rico, so I suppose the question is if the increased trade with Caribbean nations would offset however much trade with the US mainland would diminish. I don't know the answer to that, but it could probably be found by looking at how Caribbean nations' trade compares with Puerto Rico's trade today.

[emodendroket]

Yes, I'd just expect the "common market" effect would be significant. I'll bet it would have been harder to manufacture pharmaceuticals for sale in the US in the Dominican Republic, for instance.