I want to know the answer to the following question:
From what direction did Sanskrit travel to come to India?
All the background I'm provided with is that "Evidence for such a theory includes the close relationship between the Indo-Iranian tongues and the Baltic and Slavic languages, vocabulary exchange with the non-Indo-European Uralic languages, and the nature of the attested Indo-European words for flora and fauna.". Is that enough to answer the question?
Answer: no