Where females are the same status as cattle, prepubescent brides are a natural and reasonable result. The cattle breeders can raise up the brood cows to behave tamely and properly.
“The fact that in Mohammedan law every woman must belong to some man as his absolute property – either as a child, a wife, or a concubine – must delay the final extinction of slavery until the faith of Islam has ceased to be a great power among men.”
— Winston Churchill, from The River War
Full quote summarizing Islam here:
http://themellowjihadi.com/2014/08/11/winston-churchill-the-river-war/