''"In the current trend, 27 per cent of girls nearly 1.5 million girls get married before they turn 18 in India. This is a sharp decline from 47 per cent a decade ago."
Even in my country (Nepal), child marriages are very prevalent. But the trigger here is poverty and you can't blame religion for it. Obviously the vast majority of the Nepalese are Hindu, but child marriages are prevalent in other countries as well.