Hollywood is the capital of the movie business, so aspiring actors from all around the world hone their American accents in the hopes of making it big there. A fair number of them succeed; some of the world's biggest stars hail from across the globe, although you might not guess it just from watching their movies.
10 Non-American Actors Who Do the Best American Accents, According to Reddit
You wouldn't even know they weren't from the U.S.