The Bigamy comes from the Greek word formed by " Bis " referring to " Twice " and " Gamos " for marriage, together form " double wedding ". Then it can be determined that bigamy is when a person marries a second time without having legitimately dissolved the first marriage, thus causing a simultaneous double union. Bigamy comes from civilizations in which men were allowed to have two or more women, the power of masculinity and the submissive feminine inferiority allowed such leadership, however, the formation of new societies, with more religious foundations and less condescending with lust and bad habits, founded laws and norms that restricted multiple marriage.
The monogamy has been with the indissolubility, one of the essential elements of marriage. It should be noted that, already in Roman Law it was pointed out that: "marriage is the union of a man and a woman aimed at the unity of life." For its part, the Church was outlining, from the eleventh and twelfth centuries, the basic guidelines of canon law, for which marriage can only be established between "one man and one woman." Legally in most western countries when bigamy exists it is considered a crime that can be punished with jail.
There are countries in the West where polygamous relationships are accepted(when more than one individual is related at the same time), either polygyny (when a man is related to more than one woman at the same time) or polyandry (relationship of a woman with more than one man at the same time); but their marital unions with all the individuals in their relationship are not accepted, for this the individual either the man or the woman who is relating to multiple female or male partners respectively, marrying and divorcing until he is married to the last individual of the relationship, generally. For example: if a man decides to have a polygamous relationship, he marries the first woman in the relationship, then divorces when a second woman joins, and so on until the last woman in the relationship,this to keep the husband's last name and be considered the wife of and continue with the polygamous relationship. The same happens with polyandry.
