Chapter 4 analyzes the operation of colonial legal structures and looks at implications of parallel customary and English law frameworks put in place in contexts of legal imperialism in British colonies. This chapter also explores structures of government, separation of powers, and the construction of legislative, judicial, and executive branches during colonialism. The colonial executive power was largely unconstrained, which has contributed to structural problems in the organization and operation of postcolonial governmental structures that carried over from colonialism to a significant degree. The implications of these structures for postcolonial rule in Nigeria are also examined.