The best recipe for monogamy is clear: * Keep rape illegal * Reduce male economic inequality * Reduce female personal wealth Since rape would still be illeg

The best recipe for monogamy is clear: * Keep rape illegal * Reduce male economic inequality * Reduce female personal wealth Since rape would still be illegal, female desire would still be the agent that determines reproduction and mating. But since females have no personal property, they would have to acquire resources by accessing a male's resources. Since males are all roughly equal, she will prefer to find a male who does not provide resources to other females. Voila! Monogamy.