Beginning with the religious upheavals of the Reformation, this course follows Western civilization’s political, economic, intellectual, and cultural development into the modern world. It compares constitutionalism with absolutism, mercantilism with classical liberalism, and inherited institutions with revolutionary efforts to reconstruct society. Scientific and Enlightenment thought provide a foundation for examining the American and French Revolutions, industrialization, abolition, socialism, Marxism, nationalism, imperialism, and modernism. The course then traces the alliance systems and ideological conflicts that produced two world wars, revolutionary Russia, fascism, Nazism, total war, and mass killing. Its final sections examine postwar recovery, decolonization, European integration, the Cold War, Soviet collapse, migration, Asia’s economic rise, and technological change. Across these developments, the lessons repeatedly evaluate how religion, markets, ideas, institutions, and expanding state power shaped Western societies.