Why Islam is not able to enter EUROPE? Because it was not currupt. People were honest to there nation. But in India we are not honest, we are currupt, watch any limb of the society curruption is overflowing. This is the reason Islam entered to India. If we were united and dedicated to nation it would have not happened. Take example of spain. Islam entered to that nation and was ruling. But one fine day they throwed it out of the country. You can not see even the trace of it now there. Why we were not able to do it in India? Only some kings were fighting. To name Shivaji, Prathviraj etc.