Well, in it's purest form, greasy, with pickles, ketchup, maybe a tomato slice and lettuce, it's American. It may have been inspired by hamburger steak, but it was first sold at, I believe, the Chicago Worlds Fair in it's most familiar form. Most "American" food is a rif on food from other countries - which includes food we consider foreign food. I've eaten Chinese food from the American menu and the Chinese menu at a local Chinese restaurant - not the same thing at all.
I agree with Darius. North and South America are considered separate continents based on both plate tectonics and geopolitics. Where one ends and the other begins is a fuzzy matter of debate.
The TTL voice seems to say "Amerikans o mat". Am I mishearing her? Is that really the correct pronunciation?
You wrote this over a year ago, but I'll still answer. Yes you heard right, but no, the pronunciation is not correct, and it is still wrong to this day.
There's some sort of sound glitch at the end of amerikansk. Unfortunately we have no way of fixing individual sound errors.
Don't know if this is worth mentioning, but I wrote "Jag äter inte amerikansk met," (met, not mat) but Duo didn't notice.