>About the closest I could find is that cultures who disproportionately use their men for high-risk roles are more successful than those who do not; but I don't

>About the closest I could find is that cultures who disproportionately use their men for high-risk roles are more successful than those who do not; but I don't see how this differentiated the British from the Mongols. Oh, they both did -- no question about that -- but the Mongols did it a whole damn lot more, i.e. warrior society as opposed to civil society, and were arguably less successful, long term.