Is Islam the fastest growing in religion?

Why an extremist in islam is good.They say extremist means abiding by the fundamentals.And challenge to point out one error in its teaching.I have heard videos of them and even read the book quran.I am unable to find any mistake in it. And even wonder that Quran is the only scripture which is in its pure state.No one has chaged it from its real state unlike bible which is chaged by the eminent scholars after finding mistake in God's word or either like Hindu scriptures which according to the scholars of Hindus it is not in its perfect state i.e it is corrupted. Whatever i said is true after making searches.Hindu scholars themselves says that.Christians too know that there book is changed by their scholar then how it is completely God's word.

I don't know about all you said. But history is nothing but people mutually agreed. When it comes to Hindu, It was a very old community and it was stareted in the age of Iron. So expecting the originals must be a mistake. How come they will be in their original state. Hinduism is a very old community and it was not started by a single founder. I was not in a position to answer all those because I haven't read bible and quran. Mistakes are there in every where. If you can find them, then there is no place with out any mistakes. My preferrence is to follow the fore father and not to question the rules they provided. Because they are very sensitive to challenge.