I'm looking on information that would show the ratio of women to men throughout history (the 'sex ratio'), or even information about societies where there happened to be a variation in sex ratio. I herd a long time ago that historically, there were far more males than females (i.e. Roman times), and I want to find out if that is known to be true- because if it is, the implications could be great. Does anyone know anything about this? If you have evidence that it has always been about even, that would be good too.