LOL! No, he was thrown out of his home-place of Mecca because he and his followers refused to tolerate the polytheists and the main religon there at the time. (Which started with a Z, but I can't recall the name).
Anyway, after they managed to take over in Medina, they went back to Mecca and put it to the sword.
The world must submit to islam was mohammads basic tenant, and what they call 'extremists' are nothing of the kind.
Zoroasterism?