Once upon a time it was everywhere in the world, it was in South America, Mexico, in Peru. It was in all these places. The Mayan civilization in Peru went from Sri Lanka actually. So the whole world was connected at one point of time in history. That is why the Vedas are not to one particular country or language, it is universal.
If you listen to Russian language, the expert scholars say that the language has a lot of Sanskrit words. So does German.