What caused Islam to spread quickly?
O A
The Sunni-Shia conflict over Muslim leadership.
B
The printing of the Qur'an in many different languages.
O c
Messengers spread the word by fast boats.
D.
Trade routes enabled cultural diffusion of Islam.

Respuesta :

Answer: I believe that it is D

Explanation:

This is because Islam used lots of trade routes to get to lots of places. Though the military conquest took over lots of places.