The US in the Fallout universe is heavily based on a 'post war 50s america' vision of the future.
But what about the rest of the world, like europe, either before or after the great war? Of course with this question i am going to assume that there are survivors in these places, possibly vaults of some form, and a continuation of some form of civilisation.
For instance would american rock and roll, jazz etc have become popular in the uk?