That’s because you all invented sandwiches and when the Earl slapped that roast beef between two hunks of bread (with a little mustard), he took one bite and said, “Righto, lads, that’s the duck’s bill, that is, can’t get any better!” - and everyone there believed him, which unfortunately stunted your sandwich growth a bit.
Then, when you all showed up here in the New World, you didn’t have any beef, so they had to make do, making sandwiches with beavers and potatoes and whatnot, and that sort of individualistic “anything goes” attitude towards sandwiches took hold, and before you knew it…peanut butter and banana sandwiches.
Now that’s the kind of food history you won’t get in mainstream culinary school.