This is a tough one. Sure as shit not Swedish, what with our various ways of making Herring taste and smell like nuclear waste. I'd probably go with Mexican, lots of options there. As much as I like American style fastfood it's not something that would do me well to eat for the rest of my life.
Definitely American food. Growing up with my family trying to shove strange Viet food down my throat all the time was kind of annoying. I'm a fan of simple food.