Free Women and Slave Women in the Household in the Roman Empire

Wealth and poverty have long been existed on this world. Only ten to fifteen thousands years ago, people were able to extract human effort on the basis of need. Since there were no surplus to hoard, everybody must contribute effort to his society to help his society, and so himself, survive. As human's knowledge of using tools in producing, gathering and hunting increased, they had not only enough supplies for their demand but also surplus to be struggled. There were some individuals in the society who had better privilege or social position (because of their strength or their ability to contribute to society) would share those surplus. The gap between who had the surplus and who had not - which we call inequality - began appearing. Those who had surplus could use their wealth to have more power or authority and then used their power to earn more wealth, and so on... Since human's intellect and experience has grown up continuously, the gap has never stopped increasing. …