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The End of Bipolarity Class 12 Political Science Notes 2026-27

The End of Bipolarity covers the disintegration of the Soviet Union, the end of the Cold War, the rise of new independent states, and changes in the global political order. Use PW handwritten notes to revise these key events, causes, and developments for the Class 12 Political Science board examination.
authorImageAnshika Agarwal3 Oct, 2026
The End of Bipolarity Class 12 Political Science Notes 2026-27

 

The End of Bipolarity is an important chapter in Class 12 Political Science that covers the disintegration of the Soviet Union, the end of the Cold War, and the changes in the global political order. Understanding these events and their impact can be challenging when revising several concepts and developments together.

Physics Wallah provides handwritten notes for The End of Bipolarity to help you revise key concepts, events, and important points from the chapter. You can use these notes along with PW’s Class 12 Political Science online classes and batches to strengthen your understanding and prepare for the board examination.

The End of Bipolarity Class 12: Chapter Overview

The chapter explains how the bipolar world that emerged during the Cold War came to an end with the collapse of the Soviet Union. The Berlin Wall, which had symbolised the division between the capitalist and communist worlds, fell on 9 November 1989, marking an important development towards the end of the communist bloc.

The Soviet Union had been established after the 1917 socialist revolution in Russia. Its planned and state-controlled economy was accompanied by a political system centred on the Communist Party. Over time, bureaucratisation, authoritarianism, military expenditure and economic stagnation created major challenges.

Mikhail Gorbachev introduced economic and political reforms in 1985. However, growing nationalism and demands for sovereignty among several Soviet republics became the immediate cause of the USSR's disintegration. In December 1991, Russia, Ukraine and Belarus declared the Soviet Union disbanded and established the Commonwealth of Independent States.

What Do The End of Bipolarity Class 12 Notes by PW Cover?

The PW notes cover the major developments associated with the collapse of the Soviet Union and the changes that followed in international politics. The main topics include:

  • Soviet System and its Features: The socialist and state-controlled economic and political system of the USSR, along with its social welfare provisions and limitations.

  • Gorbachev and Reforms: Mikhail Gorbachev's economic and political reforms introduced after he became General Secretary in 1985.

  • Disintegration of the Soviet Union: The rise of nationalism and demands for sovereignty in different Soviet republics, followed by the disbanding of the USSR in December 1991.

  • Consequences of Soviet Disintegration: The end of Cold War confrontations and the emergence of a unipolar international system.

  • Shock Therapy: The transition towards a capitalist economy through privatisation and private ownership in post-communist regimes.

  • New Entities in World Politics: The formation of the Commonwealth of Independent States (CIS) after the Soviet Union was disbanded.

  • India and Post-Communist Countries: India's continuing relations with Russia and other post-communist countries.

  • US Dominance and the Unipolar World: The emergence of the US as the sole superpower following the collapse of the Soviet Union.

The End of Bipolarity: Important Topics for Revision

You should revise the following concepts to build a clear understanding of the chapter:

Topic

Key Points for Revision

The Soviet System

The USSR followed a socialist system with a planned economy and state control over major economic activities. The Communist Party was at the centre of the political system. Basic necessities such as health, education and childcare were subsidised.

Gorbachev's Reforms

Mikhail Gorbachev became General Secretary in 1985 and introduced economic and political reforms to address the challenges facing the Soviet system and help it catch up with the West.

Disintegration of the USSR

Nationalism and demands for sovereignty grew in several Soviet republics, particularly in Russia, the Baltic areas, Ukraine and Georgia. The Soviet Union was disbanded in December 1991.

Shock Therapy

Post-communist economic transition involved a rapid shift towards capitalism, private ownership and privatisation of state assets. In Russia, it was followed by industrial decline, inflation, a fall in the value of the ruble and weakening of the social welfare system.

Unipolar World

The collapse of the second world ended the Cold War confrontation and the ideological dispute between socialism and capitalism. The US emerged as the sole superpower, leading to a unipolar international system.

India-Russia Relations

India maintained strong relations with Russia after the Cold War. During the Cold War, the USSR supported India's public sector, its position on Kashmir at the UN and its defence requirements. India and Russia also share a vision of a multipolar world order.

Download The End of Bipolarity Handwritten Notes PDF by PW

The End of Bipolarity handwritten notes can help you revise the chapter in a concise format. The handwritten format brings together key concepts, developments and terms so that you can refer to them while revising.

You can download the handwritten Political Science notes for Class 12 and use them for quick revision before tests and examinations.

The End of Bipolarity Class 12 Political Science Notes PDF

Study without using the internet

The End of Bipolarity Class 12 Important Questions by PW

Practising questions after revising the notes can help you recall important events, concepts and relationships from the chapter.

Short-Answer Questions

  1. What did the Berlin Wall symbolise?

  2. What was the Soviet system based on?

  3. Who was Mikhail Gorbachev?

  4. What was the Commonwealth of Independent States?

  5. What is meant by shock therapy?

Long-Answer Questions

  1. Explain the major causes of the disintegration of the Soviet Union.

  2. Discuss the consequences of the collapse of the Soviet Union.

  3. Explain the main features and consequences of shock therapy.

  4. Describe the major areas of India-Russia relations.

Source-Based Questions

You can practise questions based on the Berlin Wall, the Soviet system, Gorbachev's reforms, the disintegration of the USSR and shock therapy.

Important Board-Exam Questions

Questions focusing on the causes and consequences of Soviet disintegration, shock therapy, the unipolar world and India-Russia relations should be included in revision and practice.

The End of Bipolarity Class 12 Quick Revision Notes

For quick revision, remember these key points:

  • The Berlin Wall symbolised the division between the capitalist and communist worlds.

  • It fell on 9 November 1989, marking an important step towards the end of the communist bloc.

  • The USSR was based on socialism, a planned economy and Communist Party rule.

  • The Soviet system provided subsidised basic necessities but was also marked by bureaucratisation, authoritarianism and limited political freedoms.

  • Heavy military expenditure and economic stagnation created serious challenges for the USSR.

  • Mikhail Gorbachev introduced economic and political reforms in 1985.

  • Nationalism and demands for sovereignty contributed to the disintegration of the Soviet Union.

  • Russia, Ukraine and Belarus declared the USSR disbanded in December 1991 and established the CIS.

  • The US emerged as the sole superpower after the collapse of the Soviet Union.

  • Shock therapy involved a rapid transition towards capitalism and private ownership.

  • India and Russia continued to maintain strong relations after the end of the Cold War.

  • Both countries support a vision of a multipolar world order with collective security and a strengthened UN.

The End of Bipolarity Class 12 Notes PDF can help you revise the Soviet system, Gorbachev's reforms, the disintegration of the USSR, shock therapy, the unipolar world and India-Russia relations. Use the notes along with the NCERT textbook for chapter revision and refer to PW's Class 12 learning resources for additional practice and exam preparation. 

Related Resources

FAQs

What is The End of Bipolarity Class 12 about?

The chapter explains the collapse and disintegration of the Soviet Union, the end of the Cold War, the emergence of a unipolar world and India's relations with Russia.

Where can I download The End of Bipolarity Class 12 Notes PDF?

Students can download the The End of Bipolarity Class 12 Notes PDF from PW for quick revision of key concepts and Class 12 Political Science preparation.

What topics are covered in The End of Bipolarity handwritten notes?

The notes cover the Soviet system, Gorbachev's reforms, the disintegration of the USSR, shock therapy, the unipolar world and India-Russia relations.

What happened to the Soviet Union in December 1991?

Russia, Ukraine and Belarus declared the Soviet Union disbanded and established the Commonwealth of Independent States.
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