in the Roman Empire, fruitful women had been rewarded for the number of offspring they produced. Slave women were rewarded with their liberty, while freeborn widows with large broods earned property rights and the autonomy ordinarily reserved for freeborn men. His point was that great empires needed large populations (strength came in numbers) in order to people and settle new territories. The incentives that America offered were of a different kind than elsewhere: an abundance of land and the liberty to marry young.
