The fundamental reason for the emergence of matrilineal clans is the establishment of blood relationships. For a long time in ancient times, the world was dominated by matrilineal clans, and people who were born only knew that they had their mothers but not their fathers. This blood relationship is very weak.

With the emergence and development of private ownership, the matrilineal clans under the previous public ownership system continued to disappear. To put it bluntly, the main reason for its disappearance is that the emergence of private ownership promoted the development of productivity. For productivity to develop, it must be created through men’s labor. In the end, whoever owns the most private products, such as stones, axes, livestock, etc., will have the absolute leadership in the clan society, and the one with the most will become the ruler.

In the end, the paternal lineage replaced the maternal lineage. The fundamental reason lies in the emergence of private ownership and the development of productivity.