Frankish is what Farangistan and farangi was derived from. Referring to the Franks of course. I think it is from middle ages or earlier, if I’m not mistaken.

Oh. Is this where the Thai got the word Farang too?

I actually do not know. But there’s a wikipedia page on Farang that suggests this could be the case!

Yes, but why?

Tomatoes were brought from the new world. Quick googling says Strawberries are also from Europe. That would give the Farang prefix.

why does frankish == european?