This chapter explores how industrialization transformed humanity’s relationship with both the natural world and the sacred. The mechanization of production and the rise of scientific reasoning diminished reliance on supernatural explanations, shifting moral and social order from divine authority to secular institutions grounded in rational law and civic rights. Yet, the cognitive foundations of religious thought—our tendency to personify systems and seek purpose—persisted. As traditional gods waned, new collective identities emerged through the rise of nation-states, which came to embody many of the same emotional and symbolic functions once reserved for deities. The chapter traces how colonialism, economic expansion, and political consolidation created modern nations—recent constructs often mistaken for ancient ethnic continuities. It concludes by examining how the nation became a sacred object of devotion, commanding loyalty, sacrifice, and moral purpose, thereby transforming humanity’s spiritual impulses into a modern, institutionalized form of collective belief.