Final answer:
The walking marriage of the Mosuo people is a distinctive form of matrimony where children are raised in the mother's extended family, with men having no obligatory roles towards their biological children.
Step-by-step explanation:
The walking marriage, widely adopted by the Mosuo people of China, is a unique marriage custom. Unlike traditional marriage norms, the Mosuo's walking marriage does not recognize a separate fatherhood role.
Children remain with their mother and her extended family, and men do not have social or economic obligations to their biological children, though they often take up significant responsibility for their nieces and nephews.
This practice is part of the broader spectrum of marriage customs that reflect the cultural diversity of marital institutions across different societies.
Kinship and marital structures can vary greatly, with practices ranging from polygamy to ghost marriage, as well as the adaptation of marriage in modern societies where, as seen in Iceland, a high percentage of children are born to unmarried yet committed couples.