context: Slavic studies began as an almost exclusively linguistic and philological enterprise. As early as 1833, Slavic languages were recognized as Indo-European.
question: কখন স্লাভিক ভাষাগুলোকে ইন্দো-ইউরোপীয় ভাষা হিসেবে স্বীকৃতি দেওয়া হয়েছিল?
answers: As early as 1833