Although when Christianity appeared the total population of the planet was only a fraction of that of the twentieth century, most of the earth's surface was quite outside the Mediterranean world, Persia, India, and China. ↗
Rumi, who is one of the greatest Persian poets, said that the truth was a mirror in the hands of God. It fell, and broke into pieces. Everybody took a piece of it, and they looked at it and thought they had the truth. ↗
Urdu can not die out because it has very strong roots in Persia. The language itself is not only just the language of the Muslims, but it's also the language of the Hindus. ↗