You are wrong in brining Nanak and Sikhs in your post. Otherwise, except for some harsh language, you are saying what happened in the history.
I am not going into the correctness of the numbers you mention, these are disputed by both sides. But the fact is early rulers belonging to these two faiths spread their faith by sword. It also tells the weakness of India that did not provide a united front in those times. That streak continues and we continue to fight amongst ourselves, while terrorists have a field day.
