1. SociologyConcubinage is an interpersonal and sexual relationship between two people in which the couple does not want to, or cannot, enter into a full marriage. Concubinage and marriage are often regarded as similar, but mutually exclusive. In China, until the 20th century, concubinage was a formal and institutionalized practice that upheld concubines' rights and obligations. A concubine could be freeborn or of slave origin, and her experience could vary tremendously according to her master's whim. During the Mongol conquests, both foreign royals and captured women were taken as concubines. Concubinage was also common in Meiji Japan as a status symbol. Ancient Near Eastern societies used concubinage for reproduction. The practice of a barren wife giving her husband a slave as a concubine is recorded in the Code of Hammurabi. The children of such relationships would be regarded as legitimate. Such concubinage was also widely practiced in the Muslim world until the abolition of slavery in the mid... from wikipedia.org