World History
9 study notes for World History, mapped to the official UPSC syllabus.
Study notes
French Revolution (1789–1799): Causes, Phases, Significance and UPSC RelevanceThe French Revolution (1789–1799) demolished the ancien régime of monarchy and feudalism, proclaimed Liberty–Equality–Fraternity, and gave the modern world its foundational political vocabulary — nation, citizenship, left and right, revolution itself. Its ideas reached India through colonial education and the nationalist movement.Decolonisation of Asia and Africa (1945–1975): Causes, Patterns and LegacyBetween 1945 and 1975, over 70 countries gained independence from European colonial rule — the largest political transformation in world history. Understanding the pattern, causes and consequences of decolonisation is essential for UPSC World History, especially its connection to Non-Alignment and India's foreign policy.Nationalism in Europe (19th Century): Unification of Italy and Germany19th-century European nationalism produced two of history's most dramatic political achievements — the unification of Italy (1861) and Germany (1871) — through a combination of liberal idealism, revolutionary movements and cold power politics. Both new nations' aggressive territorial ambitions later contributed to World War I.American Revolution (1775–1783): Causes, Course and Global SignificanceThe American Revolution (1775–83) was the first successful anti-colonial independence war in the modern era. Its Declaration of Independence articulated the principle that governments derive authority from the consent of the governed — a revolutionary claim that inspired the French Revolution and all subsequent democratic movements, including Indian nationalism.Russian Revolution (1917): February, October and Global ImpactThe Russian Revolution of 1917 — comprising two distinct upheavals in February (liberal) and October (Bolshevik/communist) — overthrew the world's largest autocracy and created the first communist state, reshaping global politics, inspiring colonial nationalists including in India, and launching the Cold War.Cold War (1947–1991): Origins, Key Episodes and DecolonisationThe Cold War (1947–1991) was the ideological and geopolitical rivalry between the USA and USSR that defined global politics for nearly half a century — fought through proxy wars, arms races, space competition and the constant threat of nuclear annihilation. India's Non-Alignment was a direct response to this bipolar world.World War II (1939–1945): Causes, Course, Holocaust and Post-War OrderWorld War II (1939–45) was the deadliest conflict in human history — 70–85 million dead, the Holocaust, atomic bombs and the collapse of European empires. It reshaped global order through the UN, decolonisation and the Cold War, directly triggering Indian independence.World War I (1914–1918): Causes, Course, Consequences and Impact on IndiaWorld War I (1914–18) reshaped the global order: ended four empires, created new nations, spread revolution and produced the punitive peace that made World War II almost inevitable. For India, it produced the Rowlatt Act, Jallianwala Bagh and Gandhi's entry into mass politics.Industrial Revolution: Origins, Spread and Impact on India and the WorldThe Industrial Revolution (c. 1760–1850, Britain; 1820–1914, globally) transformed human production from hand-craft to machine manufacture, creating industrial capitalism, urbanisation, and — crucially for India — the colonial economic relationship that de-industrialised the subcontinent.