Over the twentieth century, a growing number of countries and other jurisdictions have lifted bans on and have established legal recognition for interracial marriage, interfaith marriage, and most recently, same-sex marriage.
Individuals may marry for several reasons, including legal, social, libidinal, emotional, financial, spiritual, and religious purposes.
Whom they marry may be influenced by socially determined rules of incest, prescriptive marriage rules, parental choice and individual desire.
In some areas of the world, arranged marriage, child marriage, polygamy, and sometimes forced marriage, may be practiced as a cultural tradition.
Conversely, such practices may be outlawed and penalized in parts of the world out of concerns for women's rights and because of international law.