Marriage is a universal social institution that regulates human sexuality and establishes families. It involves a relatively permanent bond between permissible partners that is recognized socially and often legally or religiously. Marriage has functions like regulating sex, creating families, and providing economic cooperation between partners. It can take various forms like monogamy or plural marriages. Modern trends show changes in the aims, rules and stability of marriage along with increasing problems related to understanding, divorce, dowry, family conflicts, and inter-caste or inter-state marriages.