Jose wrote:
But if i'm flying into Germany, for
example, would I be speaking to their ATC in german or english? What
about Mexico? What if i'm a mexican pilot would it be english or
spanish?

I believe it is in English, worldwide. I've never flown in a foreign
country, but my understanding is that ATC is supposed to be in English,
even for the natives.

Jose
English is the main language in aviation, but local language is accepted
in most Countries