Cochran speculated, "You'd need several factors to contend for the record. You'd need to conquer a big empire. You'd need a place where harems are common. So, forget Europe. Charlemagne couldn't have had the same impact. You'd have to be able to organize a big, long-lasting state, so medieval Africa is an unlikely setting. Maybe the founder of a long-lived Chinese dynasty would be in the running. Or the founder of a polygamous religion."