Can Indians be divided on the issue of being South Indian or North Indian.?

Unluckily still the youth responds positively on the issue. Is it not an attempt to divide the spirit of India at a time when it is required most. I was astonished to see the comments in response to a question asked by Mohammed Ghori (Ghazi). Please refer his comments what he added at last. Concidently Mohd Ghori (The invader who got defeated many times by an Indian King Prithvi Raj Chauhan) adopted the similar tactics and then India got abused for the years. Please limit your views to the remarks added by Mohammad Gori (Ghazi).