The history of slavery covers slave systems in historical perspective in which one human being is legally the property of another, can be bought or sold, is not allowed to escape and must work for the owner without any choice involved. As Drescher (2009) argues, "The most crucial and frequently utilized aspect of the condition is a communally recognized right by some individuals to possess, buy, sell, discipline, transport, liberate, or otherwise dispose of the bodies and behavior of other individuals." A integral element is that children of a slave mother automatically become slaves.