My doctoral thesis examines the broad question of whether appropriately designed institutions and policies can address the short- and long-term consequences of determinants of human capital which are "immutable'' by nature or are perceived as such. I consider three different types of immutable determinants of human capital: male versus female biology; colonization; and traditional norms of gender roles. In Chapter 1, I examine whether, and how, change in political regime type affects excess male infant mortality. Analyzing data on more than 3 million live births from sub-Saharan African countries, I exploit within-mother variation in political regime type to find that excess male infant mortality significantly decreases following a transition to democracy. I identify competitiveness of executive recruitment, constraints on the chief executive, and political participation as the features of democracy that matter most. Examining causal mechanisms, I find that democracy fosters the provision of health inputs, including maternal education, tetanus immunization, breastfeeding, and normal birth weight, all of which have stronger health benefits for boys than for girls, despite being found to be ex-ante "gender-neutral'' in my setting. In Chapter 2, I examine how colonial reproductive laws interact with market incentives to shape long-term fertility behavior in Africa. Exploiting the arbitrary division of ancestral ethnic homelands and the resulting discontinuity in institutions across the British-French colonial borders, I find that women in former British areas are more likely to delay sexual debut and marriage, and have fewer children. However, these effects disappear in areas close to sea, where market access and the opportunity cost of childbearing appear to be high irrespective of the colonizer identity. This heterogeneous impact of colonial origins extends to measures of local economic development and household welfare. Examining causal mechanisms, I argue that the fertility effect of colonial origins is directly linked to colonial population policies and reproductive laws and their impact on the use of modern methods of birth control. I find little evidence that the fertility effect of British colonization operates through education or income. While British colonization is linked to higher female education levels, this occurs mainly close to the sea while the fertility effects do not. Again, while income levels differ, the fertility gap between British and French colonies opened prior to 1980, while the income gap opened-up after 1990. This chapter highlights the heterogeneous nature of the colonial origins of comparative fertility behavior and economic development, and implies that economic incentives may overcome historical determinism. In Chapter 3, I examine the interplay between legal origins and pre-colonial cultural norms of gender roles in determining female economic empowerment in sub-Saharan Africa. Taking advantage of the arbitrary division of ancestral ethnic homelands across countries with different legal origins, I directly compare women among the same ethnic group living in civil law countries and common law countries. I find that women in common law countries are significantly more educated, are more likely to work in the professional sector, and are less likely to marry at young age. However, these effects are either absent or significantly lower in settings where ancestral cultural norms do not promote women's rights and empowerment. In particular, I find little effect in bride price societies, patrilocal societies, and societies where women were not involved in agriculture in the past.