By David Brooks
Slavery is a system based on ownership. The owner may work services without pay. Generally the owner is responsible only for providing food and shelter. The owner can separate a family. A slave is called an article of property, and can even be sold or given away. Slaves did not come under citizens.
Slavery has appeared almost everywhere through history along people of every culture; form ancient Greece to the American Indians. Slavery is not unusual to any type of environment . It lasted among nomads of Asia, Hunting societies of North Americans, as well as in settled groups, although the slave served different funcitoin in these societies. Slaves were valued primarily as the major work force in production. the late type of slavery existed in parts of the Middle East , Africa , and China. The more agriculture societies were able to use slaves by itself, and in such societies slavery became systematic. Although slaves would seem to be the primary source of energy that would lose importance with the advice of mechanization, the opposite proved true in the U.S.; the cotton gin , which came into use after 1800, prepared cotton for marketing so rapidly that the demand for slaves increased.
There is evidence slaver existed around the Sumerians.
