A nation prospers when its daughters are happy because educated and happy women contribute significantly to society in multiple ways.

When girls receive education, they become capable of making informed decisions about their health, career, and family. Educated women can pursue careers, contribute to the economy, and support their families financially.

They raise healthier and better-educated children, breaking the cycle of poverty and illiteracy. Happy daughters become confident mothers who pass on values of education and self-respect to the next generation.

When women are educated and happy, they participate in civic life, contribute to policy-making, and help build a more just and equitable society. The nation benefits from their skills, talents, and perspectives.

Gender equality leads to better utilization of human resources, as half the population is empowered to contribute fully. Countries with higher rates of female education show better indicators of development, including lower infant mortality, better health outcomes, and higher economic growth.

Thus, the happiness and education of daughters directly correlates with national progress and prosperity.