Class 12 Political Chapter 1 Notes | The End of Bipolarity Important Notes
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Class 12 Political Chapter 1 Notes | The End of Bipolarity Important Notes
Political Science – Chapter 1: The End of Bipolarity notes are given below:
Introduction
- Till 1991, the world was divided into two superpower blocs – USA (capitalism) vs USSR (socialism).
- This balance of power is called bipolarity.
- The collapse of the Soviet Union (1991) ended the Cold War and changed global politics.
- It marked the beginning of unipolarity with the USA as the only superpower.
Causes of Disintegration of USSR
- Economic Stagnation – Central planning failed, low productivity, shortages of goods.
- Military Burden – Heavy spending on arms race with USA drained resources.
- Afghanistan War (1979–89) – Long, costly, and unpopular.
- Political Rigidity – No democracy, corruption, lack of reforms.
- Nationalism – Republics like Lithuania, Ukraine, Estonia demanded independence.
- Reforms of Gorbachev – Glasnost & Perestroika weakened central control.
- Loss of Legitimacy – Communist Party no longer trusted by citizens.
Table: Comparison – USA vs USSR
| Feature | USA (Capitalism) | USSR (Socialism) |
|---|---|---|
| Political system | Multiparty democracy | One-party Communist rule |
| Economy | Free market, private ownership | State-controlled economy |
| Military alliance | NATO | Warsaw Pact |
| Ideology | Capitalism, Liberal democracy | Marxism–Leninism, Socialism |
| Global influence | Western Europe, Japan, others | Eastern Europe, Cuba, etc. |
Soviet Political System
- One-party rule under Communist Party.
- Absence of free elections.
- Centralised decision-making.
- Emphasis on equality but often inefficient.
- Ideology used as control mechanism.
Soviet Economic System
- State-owned industries & farms.
- 5-Year Plans for production targets.
- Focus on heavy industries, defense, energy.
- Assured jobs, education, healthcare.
- Neglect of consumer goods → shortages.
Gorbachev’s Reforms
- Glasnost (Openness): Freedom of speech, reduced censorship.
- Perestroika (Restructuring): Economic decentralisation, limited private business.
- Impact: Instead of saving USSR, reforms accelerated collapse by exposing weaknesses.
Fall of the Berlin Wall (1989)
- Symbol of Cold War division between East and West Germany.
- Fall led to:
- Reunification of Germany (1990).
- Collapse of Communist governments in Eastern Europe.
- Spread of democracy.
- End of ideological divide in Europe.
Shock Therapy (Post-Soviet Reforms)
- Sudden shift from socialism → capitalism.
- Steps included privatisation, free markets, foreign investment.
- Consequences:
- Inflation & poverty increased.
- Collapse of industries.
- Rise of oligarchs (wealthy businessmen).
- Sharp inequality.
- Weakening of healthcare & education.
Consequences of Shock Therapy
| Positive Outcomes | Negative Outcomes |
|---|---|
| Opening to global economy | Rise in unemployment and poverty |
| Entry of foreign investment | Hyperinflation |
| Integration with world trade | Collapse of social welfare system |
| Political pluralism | Economic inequality and social unrest |
Challenges Faced by Russia (After 1991)
- Political instability under Boris Yeltsin.
- Separatist movements (e.g., Chechnya).
- Economic depression and inflation.
- Decline in global influence.
- Struggle for democracy and federalism.
Consequences of USSR Disintegration on World Politics
- End of Cold War.
- Collapse of bipolar world → rise of unipolarity.
- USA emerged as sole superpower.
- Spread of democracy and liberal capitalism.
- Weakening of socialist ideology globally.
- Rise of new power centres later (EU, China, India).
- NATO expanded eastwards.
Timeline of Key Events
| Year | Event |
|---|---|
| 1949 | Formation of NATO |
| 1955 | Formation of Warsaw Pact |
| 1979 | Soviet invasion of Afghanistan |
| 1985 | Gorbachev becomes leader of USSR |
| 1989 | Fall of Berlin Wall |
| 1990 | Reunification of Germany |
| 1991 | Disintegration of USSR, end of Cold War |
Comparison: Cold War Era vs Post-Cold War Era
| Aspect | Cold War (Before 1991) | Post-Cold War (After 1991) |
|---|---|---|
| World order | Bipolar (USA vs USSR) | Unipolar (USA dominant) |
| Alliances | NATO vs Warsaw Pact | NATO expanded, Warsaw Pact ended |
| Economy | Division (capitalism vs socialism) | Liberal democracy & globalization |
| Conflicts | Proxy wars, arms race | US dominance, regional wars |
| Europe | Divided (East vs West) | United Europe, EU integration |
🌟 Conclusion
- The disintegration of the USSR ended the bipolar world order.
- The Cold War rivalry gave way to US dominance.
- While the Soviet model collapsed, it also left lessons about the risks of over-centralization.
- The post-Cold War world saw democracy, capitalism, and globalization, but also created new inequalities and challenges.
Class 12 Political Chapter 1 Question Answer | The End of Bipolarity Important Questions
Class 12 Political Science Chapter 1 MCQ | The End of Bipolarity Important MCQ

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