Pizza strangely enough was originally a Persian Dish seems as it was first mentioned as such in the 1100's

The word satay is from either Javanese or Malay. However, the idea of sticking pieces of meat on a stick and cooking them over fire surely goes back to cavemen - long before countries existed.

Peanuts (for the sauce) came from Mexico following the Spanish colonisation of that country, and first came to SE Asia in the Philippines (a Spanish colony at the time). Not sure how they spread from there to the rest of SE Asia.

I'd put my money on Japan, it doesn't sound indonesian.

Sake, sate...

Where did pate originate?

You're foncusing pâté and foie gras (though pâté can be made from foie gras).

The word itself is not Thai, so Thailand can not claim the origin

Malaysia/indo they "Sat.ay"...which is most likely the correct way to say it, while in Thailand they say "Ste..ak"

So i am going with Indo/Malaysia

I would have expected our resident dutchman to pipe up with this.  Satay origininated in Nederlandsch Oost Indië where the rich Dutch could afford to actually put meat on skewers and barbecue it.  AAs they had not yet stolen HP sauce they found that soaking it in coconut milk made the local meat a little more tender and then topped it with a peanut sauce.