Which is a typically American way of seasoning spaghetti and other pasta?
I might refer you to this video, where Malcolm Gladwell talks (a little bit) about spaghetti, and how Americans prefer to eat it.

Apparently, companies doing market research found that Americans say they want "real Italian pasta sauce," which is somewhat thinner than "American style," but actually prefer eating the chunkier, heartier sauces now common on supermarket shelves.