The most common marital system in the majority of preindustrial societies around the world is

Polygamy is a marital system in which a person may have more than one spouse at a time. It was the most common marital system across the majority of preindustrial societies, even though monogamy is more common in many societies today. Neolocality and matrilocality describe where a couple lives, not how many spouses they may have.

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