Stephanie Coontz in Cato Unbound:
Any serious discussion of the future of marriage requires a clear understanding of how marriage evolved over the ages, along with the causes of its most recent transformations. Many people who hope to “re-institutionalize” marriage misunderstand the reasons that marriage was once more stable and played a stronger role in regulating social life.
For most of history, marriage was more about getting the right in-laws than picking the right partner to love and live with. In the small-scale, band-level societies of our distant ancestors, marriage alliances turned strangers into relatives, creating interdependencies among groups that might otherwise meet as enemies. But as large wealth and status differentials developed in the ancient world, marriage became more exclusionary and coercive. People maneuvered to orchestrate advantageous marriage connections with some families and avoid incurring obligations to others. Marriage became the main way that the upper classes consolidated wealth, forged military coalitions, finalized peace treaties, and bolstered claims to social status or political authority. Getting “well-connected” in-laws was a preoccupation of the middle classes as well, while the dowry a man received at marriage was often the biggest economic stake he would acquire before his parents died. Peasants, farmers, and craftsmen acquired new workers for the family enterprise and forged cooperative bonds with neighbors through their marriages.
More here.
