This episode explores how war emerged not as the opposite of civilization, but as one of its earliest consequences. It begins with the roots of violence in the animal kingdom and shows how early human groups inherited territorial and resource competition. As agriculture created permanent settlements and accumulated wealth, conflict evolved from spontaneous skirmishes to organized warfare. Ancient states like Sumer, Egypt, and Akkad professionalized war, linking military success to political legitimacy. Over time, an arms race fueled new technologies — from bronze swords to siege engines — intertwining war with innovation. The episode examines why war persists despite its devastation: resource scarcity, identity, fear, ambition, and the structural pressures of growing societies. Finally, it looks at the modern world, where war has shifted into cyber conflict, proxy battles, and information warfare, raising the question of whether humanity can ever truly end war or only reshape it.