How did Leopold von Ranke describe the role of nation-states in history?

Leopold von Ranke viewed nation-states as the primary entities of historical importance, describing them as "spiritual entities," "original creations of the human mind," and even "thoughts of God".12

In his historical philosophy, Ranke believed that history evolves through the independent development of these individual states, which together constitute the broader process of culture. He rejected the application of abstract, universally valid principles to social and national order, arguing instead that political and social institutions must be adapted to the unique characteristics and historical continuity of each people.1

For Ranke, the historian’s task was to intuit the specific cultural principle or "idea" incarnated in each nation to discern the unfolding of a divine plan in history. While he believed each people shared a common cultural tradition, he maintained that they were free to develop their own concepts of the state. Ultimately, he saw the European system of states as a result of this cultural process, which he believed was essential for maintaining social and political order.21