Final answer:
Exogamy requires individuals to marry outside of certain social groups or kin, focusing on values like love and compatibility, whereas endogamy encourages marrying within one's own group. Though polygamy is accepted in some societies, most people practice monogamy.
Step-by-step explanation:
Many societies practice exogamy, which means that a person must marry someone from outside certain social groups, typically outside their own close kin or social community. In exogamous marriages, one often looks for values such as love and compatibility. Societies may also have rules of endogamy, encouraging individuals to marry within their own social group or class. These marriage rules serve to structure societal relationships and maintain a variety of economic, social, and cultural norms.
While polygamy is accepted in certain societies, with polygyny (a man married to multiple women) being the more common form, it is not universally practiced by a majority. Monogamy remains the norm in many parts of the world, including the United States, where marriage is typically between two people. Factors like social status, religion, and economic conditions influence the practice and acceptability of polygamy in different cultures.