All agreed about Asian countries turning to English due to American influence. But in Europe, from Holland to Bulgaria, people actually try to ensure they don't pick up an American accent when they learn English, and are ashamed when they do.
Proximity helps. It was not until a few decades ago that it became commonplace for Continental Europeans to study English in school, which might suggest U.S. influence there. But I'd imagine that most English teachers in Europe have spent time in the UK, and it's a lot easier/cheaper for European students to take a train across the Channel than to fly across the Atlantic.
The annoying thing is that Europeans never seem to want to pick up a Scottish, Irish or Welsh accent; they all want to sound like James Bond