What are the different forms of marriage and how are they culturally adaptive? (anthropology)?

What are the different forms of marriage and how are they culturally adaptive?What are the different forms of marriage and how are they culturally adaptive? (anthropology)?
There are a lot of different forms of marriage. Since so few people seem to know about this one (or simply flat out deny it), I'll mention specifically that there are a few, one in particular (or at least there was before civ crushed it) tribe in Africa where the only marriages were same-sex marriages. One tribe consisted of two villages with men in one and women in another. Opposite-sex contact was usually limited to select times for ceremonial breeding periods. Cheating on a spouse (these select breeding periods weren't considered cheating) was such a huge no-no that it was seen as dishonoring the entire tribe.





Other marriages are your more well known marriages of a single male and female, while others are a single male with many females and a few with a single female with many males. Also there are marriages were they are expected to be monogamous, where only the female was expected to be monogamous, or where monogamy wasn't an issue either way.





A single male with many females often took place, traditionally, in more war-like tribes where war reduced the number of men, thereby leaving more women than men.What are the different forms of marriage and how are they culturally adaptive? (anthropology)?
Do you mean Polygyny and Polyandry?





If so, Polygyny would be practiced when a man has enough resources to support multiple wives and offspring.





Polyandry would be practiced where there is a shortage of women of marriageable age. It would presumably keep the young men from leaving the group and would also provide extra resources for the offspring.