Re: Why Sanskrit never became a common man's language?
Google Indo-Aryan, and look at the Britanica entry. They are not letting post the link.
Urdu, Punjabi, Sindhi, Seraiki, Hindko, Chitrali, Pahari and Shina are all Indo-Aryan languages. The vocabularly in Urdu is mostly Farsi-Arabic, but it is definetly an Indo-Aryan language. Urdu is basically an Arobo-Persianized version of Khari Boli, a language spoken in a region extending from Meerut to Shahjahanpur in UP. Historically, the tem Urdu speakers only applied to this group (Musharaf, Altaf Hussain, Hali, Sharar, Ghalib, Raees Amrohvi e.t.c), but now been extended to all North Indian muslims.