There is a deliberate attempt by modern Historians (who take the word of muslim historians of medieval ages as gospel) to portray: a) India was a sitting duck which was easily conquered by Muslims. b) Muslims were very cultured!
Both these assertions are absolutely false. I will tackle the first one now and the second one later.
Also on request of many I have split the page into a high bandwidth version and a low bandwidth version (for people who are still using dial up connections):