World History is an important part of the UPSC Civil Services Examination, particularly in General Studies Paper I of the Mains examination. It focuses on major global events and transformations that shaped the modern world. The syllabus broadly covers the Industrial Revolution, American and French Revolutions, unification of Germany and Italy, colonization and decolonization, World Wars, the Russian Revolution, rise of Nazism and Fascism, the Cold War, and globalization. Understanding events such as the French Revolution, the Russian Revolution, and the World War II is essential to grasp ideological shifts, political changes, and socio-economic transformations across continents. The focus should be on causes, key features, consequences, and global impact rather than memorizing dates. Preparation strategy includes building conceptual clarity, understanding interconnected developments, and linking themes such as capitalism, socialism, imperialism, and nationalism. In Mains, ...