There are reasons why polyandry is the need to increase the survival rate of infants, to maintain a family, build up assets, and the minds of women in the society then.
The reason is polyandry It also wants to increase the survival rate of infants, to maintain possession of the family, to secure the property and minds of women in society.
The cause of polyandry. Because he wants to improve the survival rate of the baby,. In order to maintain the property of the family,? To construct the security assets and the heart of a woman in the society.