Picture in your mind a conversation between a New Yorker, someone raised in the American Midwest, and someone from the Deep South. You can probably imagine a rich tapestry of accents, regional variations, and idiomatic expressions. All within the borders of the United States. Now, the Atlantic Ocean is vast. Over time, American English and its counterpart from across the pond have grown apart, sometimes evolving in completely different ways. From pronunciation and vocabulary to spelling, here are 10 differences between American and British English.