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.

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.

alliances in ww1 were different from ww2 because the entente in ww1 made up of serbia,russia,france,britan,japan and italy later america  and all allied in a sort of balance of power and too keep germany,austria-hungary,and the ottomans down. russia allied the serbians in order to exert its influence in the balkans while france allied the russians because france was still in dismay and insulted after the defeat to the germans during the unification of germany and britian allied the belgians after the germans invasion of belgium.in ww2 the alliances were in a preemptive attempt to deter any further wars into happening while germany and italy allied since they were insulted and humiliated after the previous war while also sharing a similar ideology of facsim along with japan which all 3 had a want for world domination and agreed to assist one another in the endevours 

explanation:

2. a land bridge connected asia and north america thousands of years ago.

4. crossing the land bridge would have been simple for the first migrants.

5. people might have crossed a land bridge while hunting animals.