Asoka spread Buddhism through missionary work, no one else did this for Hinduism (had no idea why I spoke about Hinduism, I know nothing about it) and more stuff I don't remember.
yeah i actually brang in my core into it (lol.)
for Christianity I talked about st paul's effective teachings enabled Christianity to spread and such teachings developed christianity via its spread to other places. and this continued. and i remembered the top 10 religions for christianity. why? i dont know.