1. Islam is a simple religion that require no hardship on his follower.
2. Islam appeal to common sense.
3. Superior polity and administration.
4. Superior social order.
5. Superior economic order.

^^^
Story!

You forgot to mention the single most important reason why Islam spread in Nigeria which was the Jihad wars led by Uthman Dan fodio in the 19th century.

Raheemabdusalam: 1. Islam is a simple religion that require no hardship on his follower.
2. Islam appeal to common sense.
3. Superior polity and administration.
4. Superior social order.
5. Superior economic order.

this is clearly a "troll bait" thread.

...After he (Muhammed) was sent away, he returned to Mecca with some disciples he had made and conquered it; he subdued it. That is Jihad. That is the only factor that has lead to the spread of Islam (the so called 'religion of peace') even in most middle east countries