@JaninaDuszejko I hope you don't mind me hijacking
Cheeseburgers Hamburgers are named after the German city Hamburg - also cheese is distinctly European
Fajitas Mexican, Texas became part of the Union long after India was part of the Empire so if you're allowed Fajitas, we're allowed curries as British
Chilli As above
Jambalaya I'm aware of this dish because of reading about it in American books but have never eaten it. I don't think the reach is as big as you think.
Nope there are version in West Africa and Spain. Where people came from to the US 'south'.
Crabcakes Fishcakes are made across the world, I'd not consider this American
Lobster rolls Never heard of them - basuically fish in a hot dog bun
Eggs benedict Made with English muffins and canadian ham
Club sandwich Named after the Earl of Sandwich. You're scrapping the barrel if you think a specific kind of sandwich is an example of great American cuisine
Buffalo wings American but not really 'great cuisine'.
Philly cheese steak Never heard of this - hot beef and cheese sandwich - see 'Sandwich' above
American BBQ and brisket I actually associate barbecues with Australia more than America even though I know it come from America. Isn't that funny? I'd also argue that cooking food over a fire or charcoal is a method of cooking used everywhere in the world (with the exception of one Mauri group who historically used hot springs).
Brisket on the other hand is just a cut of meat, the word comes from old norse, nobody in Europe would associate it with America. Also features big in Jewish cooking
Key lime pie Yes American.
Popcorn American but really pretty basic. Healthier than average snack food. Actually Mesopotamian.
Clam chowder American and I do actually like this. Not very common outside the US though. - Cullen Skink isn't much different, it's just that the fish is smoked - so Scottish
Chocolate chip cookies Undercooked biscuits