Final answer:
Preferences for monogamy or polygamy in human societies are diverse, with monogamy being prevalent in Western cultures and polygamy accepted in various degrees in other parts of the world. Economic conditions, social status, and cultural practices can influence these marital structures. As urbanization increases, the prevalence of polygamy tends to decrease.
Step-by-step explanation:
In human societies, the preferences between monogamy and polygamy vary widely. Monogamy, the union of two adults, is especially adapted to societies that require high mobility, including nomadic foragers, and it is the predominant form of marriage in American and European cultures. Monogamy also includes same-sex marriage, which is now legally recognized in many Western countries.
In contrast, polygamy, the union of more than two adults simultaneously, is accepted to varying degrees, particularly in societies in northern Africa and east Asia. Although it is widely accepted in approximately 78 percent of cultures, often fewer than 10 percent of men in these societies practice polygamy. These typically involve older, wealthy, high-status men. As societies urbanize and have more access to mass media, technology, and education, the prevalence of polygamy tends to decrease.
Many factors influence the preference for monogamy or polygamy, including social status, religious ideologies, economic conditions, and the food-getting strategies of the culture. Monogamous relationships are also standard in certain Christian regions and contemporary urban societies. In polygamous societies, starting with a two-person marriage is common, but adding partners is often an indicator of status and can be a response to social stressors.