The requirements are that the prospective partner must not already be married, be of legal age, not be closely related, and, in the majority of states, be of a different sex.
Conflict theorists claim that denying gays and lesbians the right to marry strengthens their position as second-class citizens.
Monogamy. The only type of marriage recognized as legal in the United States is a union between two people. continuous monogamy. a series of unions in which a person has more than one spouse over the course of a lifetime but is only ever officially wed to one person at a time.
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