Historical evidence proves that Islam was spread by force:
A bible verse came to mind when I read that:Matthew 7:15 - Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves.
The God of the Quran is not only belligerent but also unpredictable and his wrath at times unjustified! Someone is jealous of the True God and is displayed in secret within the very Suras and at times covered up by his false love and mercy.