Class 10 Social Science · Chapter 4

Samacheer Class 10 Social Science - The World After World War II

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Chapter-wise textbook exercise answers for The World After World War II with validation-aware solutions.

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Sections in this chapter
I Choose the correct answer 8II Fill in the blanks 17EXERCISE 2III Choose the correct statement/statements 2IV Match the following 1V Answer briefly 2VI Answer in detail 2VII Activity 2III Short answer 4
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1I Choose the correct answer8 questions
Q.1Which American President followed the policy of containment of Communism?v
  1. a. Woodrow Wilson
  2. b. Truman
  3. c. Theodore Roosevelt
  4. d. Franklin Roosevelt
Solution

President Harry S. Truman followed the policy of containment (Truman Doctrine, 1947) to limit Soviet expansion.

Answer:

b

Q.1Which American President followed the policy of containment of Communism?v
  1. a. Woodrow Wilson
  2. b. Truman
  3. c. Theodore Roosevelt
  4. d. Franklin Roosevelt
Solution

Harry S. Truman articulated the containment policy (Truman Doctrine, 1947) to oppose Soviet influence.

Answer:

b

Q.2When was People's Political Consultative Conference held in China?v
  1. a. September 1959
  2. b. September 1948
  3. c. September 1954
  4. d. September 1949
Solution

The Chinese People's Political Consultative Conference (CPPCC) met in September 1949 (leading up to the proclamation of the PRC on 1 Oct 1949).

Answer:

d

Q.2When was People's Political Consultative Conference held in China?v
  1. a. September 1959
  2. b. September 1948
  3. c. September 1954
  4. d. September 1949
Solution

The CPPCC met in September 1949 before the founding of the People's Republic of China.

Answer:

d

Q.4Who became the Chairman of the PLO's Executive Committee in 1969?v
  1. a. Hafez al-Assad
  2. b. Yasser Arafat
  3. c. Nasser
  4. d. Saddam Hussein
Solution

Yasser Arafat became Chairman of the PLO's Executive Committee in 1969 and led the Palestinian movement.

Answer:

b

Q.4Who became the Chairman of the PLO's Executive Committee in 1969?v
  1. a. Hafez al-Assad
  2. b. Yasser Arafat
  3. c. Nasser
  4. d. Saddam Hussein
Solution

Yasser Arafat assumed the chairmanship of the PLO Executive Committee in 1969.

Answer:

b

Q.5When was North and South Vietnam united?v
  1. a. 1975
  2. b. 1976
  3. c. 1973
  4. d. 1974
Solution

The official reunification into the Socialist Republic of Vietnam took place in 1976, after the 1975 military victory.

Answer:

b

Q.66. When was the Warsaw Pact dissolved?v
  1. a. 1979
  2. b. 1989
  3. c. 1990
  4. d. 1991
Solution

The Warsaw Pact was formally dissolved in July 1991.

Answer:

d

2II Fill in the blanks17 questions
Q.1_____ was known as the "Father of modern China".v
Solution

Dr. Sun Yat-sen is commonly called the 'Father of Modern China' for his role in ending the imperial system and founding the Republic of China.

Answer:

Dr. Sun Yat-sen

Q.1Dr. Sun Yat-sen was known as the "Father of modern China".v
Solution

Dr. Sun Yat-sen led revolutionary activities that ended the Qing dynasty and is called the 'Father of Modern China.'

Answer:

Dr. Sun Yat-sen

Q.2In 1918, the society for the study of Marxism was formed in _____ University.v
Solution

In 1918 a group studying Marxism was formed among students and scholars at Peking (Beijing) University, which became a centre for Marxist ideas in China.

Answer:

Peking (Beijing) University

Q.2In 1918, the society for the study of Marxism was formed in Peking (Beijing) University.v
Solution

Corrected OCR that omitted the university; answered accordingly.

Answer:

Peking (Beijing) University

Q.3After the death of Dr. Sun Yat-sen, the leader of the Kuomintang party was _____.v
Solution

After Sun Yat-sen's death in 1925, Chiang Kai-shek emerged as the leader of the Kuomintang (KMT).

Answer:

Chiang Kai-shek (Jiang Jieshi)

Q.3After the death of Dr. Sun Yat-sen, the leader of the Kuomintang party was Chiang Kai-shek.v
Solution

Corrected OCR that dropped the name; answered with Chiang Kai-shek.

Answer:

Chiang Kai-shek (Jiang Jieshi)

Q.3The United States and European allies formed _____ to resist any Soviet aggression in Europe.v
Solution

The United States and its European allies formed the North Atlantic Treaty Organization (NATO) in 1949 to deter Soviet aggression.

Answer:

NATO

Q.4_____ treaty is open to any Arab nation desiring peace and security in the region.v
Solution

The Camp David Accords (and the ensuing Egypt–Israel peace treaty) included provisions intended as a framework open to other Arab states desiring peace and security.

Answer:

Camp David Accords (Camp David treaty)

Q.4Camp David Accords (treaty) is open to any Arab nation desiring peace and security in the region.v
Solution

Corrected OCR and supplied the treaty name; Camp David Accords provided a framework that could be used by other Arab nations.

Answer:

Camp David Accords (Camp David treaty)

Q.5The treaty of _____ provided for mandates in Turkish -Arab Empire.v
  1. a. SEATO
  2. b. NATO
  3. c. CENTO
  4. d. Warsaw Pact
Solution

The question as printed in the book fragment is garbled (the multiple‑choice options are Cold War pacts and do not match the historical treaty asked). Historically, the division and mandate arrangements for the former Ottoman (Turkish–Arab) territories were settled by the wartime Sykes–Picot understanding (1916) and later formalized by the post‑war arrangements at San Remo and the Treaty of Sèvres (1920) under the League of Nations mandate system. The textbook's options appear incorrect for this question and should be checked against the original page.

Answer:

Sykes–Picot Agreement (or Treaty of Sèvres / San Remo conference)

Q.5The treaty of provided for mandates in Turkish -Arab Empire.v
  1. a. SEATO
  2. b. NATO
  3. c. CENTO
  4. d. Warsaw Pact
Solution

As above: the scanned exercise is garbled. The mandates in the former Ottoman territories were a result of the Sykes–Picot arrangements and the post‑war San Remo/Treaty of Sèvres settlements under the League of Nations mandate system. The multiple‑choice options shown (SEATO, NATO, CENTO, Warsaw Pact) do not correspond to this question; please check the printed textbook for the intended choices.

Answer:

Sykes–Picot Agreement (or Treaty of Sèvres / San Remo conference)

Q.6Germany joined the NATO in ____.v
Solution

West Germany (the Federal Republic of Germany) became a member of NATO in May 1955.

Answer:

1955

Q.6Germany joined the NATO in .v
Solution

Same as earlier duplicate: West Germany joined NATO in 1955.

Answer:

1955

Q.7_____ was the Headquarters of the Council of Europe.v
Solution

The Council of Europe is headquartered in Strasbourg, France.

Answer:

Strasbourg

Q.77. was the Headquarters of the Council of Europe.v
Solution

Duplicate/OCR variant of previous item; Council of Europe's HQ is Strasbourg.

Answer:

Strasbourg

Q.8_____ treaty signed on February 7, 1992 created the European Union.v
Solution

The Maastricht Treaty (Treaty on European Union), signed on 7 February 1992, created the European Union.

Answer:

Maastricht Treaty (Treaty on European Union)

Q.88. treaty signed on February 7, 1992 created the European Union.v
Solution

Duplicate/OCR variant; corrected and answered: Maastricht Treaty.

Answer:

Maastricht Treaty (Treaty on European Union)

3EXERCISE2 questions
Q.5When was North and South Vietnam united?v
  1. a. 1975
  2. b. 1976
  3. c. 1973
  4. d. 1974
Solution

North and South Vietnam were formally unified as the Socialist Republic of Vietnam in 1976 (following the fall of Saigon in 1975).

Answer:

b

Q.6When was the Warsaw Pact dissolved?v
  1. a. 1979
  2. b. 1989
  3. c. 1990
  4. d. 1991
Solution

The Warsaw Pact was formally dissolved in 1991 (the official end date is commonly given as July 1991).

Answer:

d

4III Choose the correct statement/statements2 questions
Q.11. i) In 1948 the Soviets had established socialist governments in the countries of Eastern Europe that had been liberated from the Nazis by the Soviet Army. ii) The chief objective of NATO was to preserve peace and security in the North Atlantic region. iii) The member countries of SEATO were committed to prevent democracy from gaining ground in the region.v
  1. a. (ii) and (iii) are correct
  2. b. (i) and (ii) are correct
  3. c. (i) and (iii) are correct
  4. d. (i), (ii) and (iii) are correct
Solution

Statements (i) and (ii) are correct. Statement (iii) is incorrect: SEATO aimed to prevent the spread of communism, not to prevent democracy.

Answer:

b

Q.22. Assertion (A): America's Marshall Plan was for reconstruction of the war-ravaged Europe. Reason (R): The US conceived the Marshal Plan to bring the countries in the Western Europe under its influence.v
  1. a. Both (A) and (R) are correct, but R is not the correct explanation of A
  2. b. Both (A) and (R) are wrong
  3. c. Both (A) and (R) are correct and R is the correct explanation of A
  4. d. (A) is wrong and (R) is correct
Solution

Both statements are correct: the Marshall Plan aimed at reconstructing Europe and, by providing economic aid, the US sought to stabilise Western Europe and limit Soviet influence—thus R correctly explains A.

Answer:

c

5IV Match the following1 questions
Q.1Match the following: 1. Dr. Sun Yat-Sen - South Vietnam 2. Syngman Rhee - Kuomintung 3. Anwar Sadat - South Korea 4. Ho-Chi Minh - Egypt 5. Ngo Dinh Diem - North Vietnamv
Solution

Correct matches:
1. Dr. Sun Yat-sen — Kuomintang (Chinese Nationalist movement)
2. Syngman Rhee — South Korea (first president of South Korea)
3. Anwar Sadat — Egypt (Egyptian president)
4. Ho Chi Minh — North Vietnam (leader of North Vietnam)
5. Ngo Dinh Diem — South Vietnam (first president of South Vietnam)
(Original list was scrambled by OCR; corrected above.)

Answer:

1 - Kuomintang; 2 - South Korea; 3 - Egypt; 4 - North Vietnam; 5 - South Vietnam

6V Answer briefly2 questions
Q.11. Write any three causes for the Chinese Revolution of 1911.v
Solution

Concise causes:
- Qing dynasty's internal decay, corruption and inability to modernize.
- Humiliation from foreign imperialism and unequal treaties that stirred nationalist sentiment.
- Growth of revolutionary nationalism and organized movements (Sun Yat-sen and others) culminating in uprisings such as Wuchang (1911).

Answer:

Three causes: 1) Decline and corruption of the Qing dynasty weakening imperial rule. 2) Increased foreign domination and unequal treaties fueling nationalist resentment. 3) Rise of revolutionary ideas and organized opposition (e.g., Tongmenghui) and failures of late reforms.

Q.22. Write a note on Mao's Long March.v
Solution

Key facts:
- Occurred 1934–35 when the CCP escaped Nationalist encirclement.
- Covered roughly 6,000 miles (commonly cited) across difficult terrain.
- Consolidated Mao's leadership and boosted CCP morale and legitimacy.
- Laid the foundation for later Communist success against the Kuomintang.

Answer:

The Long March (1934–35) was the strategic retreat by the Chinese Communist Party from Jiangxi to Yan'an covering several thousand miles; it saved the CCP, elevated Mao as its leader, and became a symbol of Communist determination.

7VI Answer in detail2 questions
Q.11. Estimate the role of Mao Tse Tung in making China a communist country.v
Solution

Key points:
- Leadership and ideology: Mao adapted Marxism to Chinese conditions, stressing peasant revolution and guerrilla warfare.
- Long March (1934–35): Mao emerged as CCP leader and symbol of perseverance and legitimacy.
- Mobilisation of peasants: Land reform and promises of social change won broad rural support.
- Military strategy: Effective guerrilla and conventional warfare enabled CCP victory over the Nationalists in the civil war (1946–49).
- Establishment of the PRC in 1949: Mao proclaimed the People's Republic of China and implemented communist institutions (land reform, collectivization, one-party rule), consolidating a communist state.
- Long-term impact: Mao shaped China's political culture and the CCP's dominance despite later policy shifts and upheavals (e.g., Great Leap Forward, Cultural Revolution).
This combination of military, political and ideological leadership was decisive in making China a communist country.

Answer:

Mao led the CCP to victory by building a peasant-based revolutionary movement, implementing guerrilla tactics, and consolidating power after 1949; his policies and leadership transformed China into a communist state.

Q.22. Narrate the history of transformation of Council of Europe into an European Union.v
Solution

Clarified narrative:
- 1949: Council of Europe founded (Strasbourg) to promote human rights, democracy and rule of law across Europe — it is a separate pan-European organisation.
- 1951–57: Economic integration began with the European Coal and Steel Community (ECSC, 1951) and then the European Economic Community (EEC) established by the Treaty of Rome (1957).
- 1960s–80s: Deeper economic and political integration among EEC members continued, leading to common policies and institutions.
- 1992: Maastricht Treaty (Treaty on European Union) created the European Union, expanding cooperation beyond economics into foreign policy and justice.
- Note: The Council of Europe continued independently (human rights/European Court of Human Rights) and was not converted into the EU. The EU grew from earlier economic communities and successive treaties, not by transforming the Council of Europe.

Answer:

The Council of Europe did not transform into the European Union; European integration progressed through separate institutions (ECSC, EEC) and treaties (Treaty of Rome, Maastricht) culminating in the EU, while the Council of Europe remained a distinct body focused on human rights and cultural cooperation.

8VII Activity2 questions
Q.11. Divide the class into two groups. Let one group act as supporters of USA and the other group act as supporters of Soviet Union, Organise a debate.v
Solution

Suggested steps:
1. Divide class into two equal groups and assign teams (USA supporters / Soviet supporters).
2. Provide background topics (e.g., Cold War ideology, security policies, alliances, Marshall Plan vs COMECON).
3. Each team prepares opening statement (5 min), two rebuttals (3–4 min each), and a closing summary.
4. Allow an audience Q&A and teacher moderation to correct factual errors.
5. End with a debrief discussing historical accuracy and lessons learned.
(This is a classroom activity instruction rather than a factual question.)

Answer:

Organise a structured classroom debate with two teams (USA supporters vs Soviet supporters), assign roles, prepare opening statements, rebuttals and closing remarks, and conclude with teacher-led reflection.

Q.22. Involving the entire class, an album may be prepared with pictures relating to Korean, Arab-Israeli and Vietnam Wars to highlight the human sufferings in terms of death and devastation.v
Solution

Suggested steps:
1. Divide topics among groups (Korean War, Arab–Israeli conflicts, Vietnam War).
2. Each group collects images, dates, short captions, and reliable sources.
3. Include statistics on casualties and displacement, personal stories, and maps.
4. Assemble into an album with a summary page discussing human cost and lessons for peace.
(This is a project/activity; answer gives implementation guidance.)

Answer:

Prepare a class album: collect historical photos and captions on Korean, Arab–Israeli and Vietnam wars; include brief descriptions, eyewitness accounts, casualty figures and reflections on humanitarian impact.

9III Short answer4 questions
Q.33. What do you know of Baghdad Pact?v
Solution

Key points:
- Established in 1955 as the Baghdad Pact; members included Iraq, Turkey, Iran, Pakistan and the UK.
- Aimed to prevent Soviet expansion in the Middle East; US supported but was not a formal member.
- Renamed CENTO (Central Treaty Organization); weakened by regional politics and collapsed after the 1979 Iranian Revolution and Iraq's earlier withdrawal.

Answer:

The Baghdad Pact (1955), later known as CENTO, was a security alliance between Iraq, Turkey, Iran, Pakistan and the UK (with US support) aimed at containing Soviet influence in the Middle East; it effectively ended in 1979.

Q.44. What was Marshall Plan?v
Solution

Concise description:
- Announced by US Secretary of State George Marshall in 1947; implemented from 1948.
- Provided financial aid, resources and technical assistance to war-ravaged Western Europe.
- Objectives: economic recovery, political stability, and containment of Soviet influence.

Answer:

The Marshall Plan (European Recovery Program, 1948) was a US aid program providing economic assistance (about $12 billion) to help rebuild Western European economies after WWII and to prevent the spread of communism.

Q.55. Write a note on Third World Countries.v
Solution

Key points:
- Term originated in Cold War era to denote non-aligned or developing countries.
- Many were former colonies experiencing economic underdevelopment, political instability and social challenges.
- Third World nations often formed the Non-Aligned Movement to pursue independent foreign policies and cooperation among developing states.

Answer:

During the Cold War, 'Third World' referred to countries not aligned with either the US-led West or the Soviet bloc—mostly newly independent, developing nations in Asia, Africa and Latin America—often facing economic challenges and seeking non-alignment.

Q.66. How was the Cuban missile crisis defused?v
Solution

Sequence and terms:
- October 1962: US discovered Soviet missiles in Cuba; Kennedy imposed a naval quarantine and demanded removal.
- Intense negotiations between Kennedy and Khrushchev led to a deal: USSR withdraws missiles from Cuba; US publicly promises not to invade Cuba and secretly agrees to withdraw US missiles from Turkey.
- Crisis ended peacefully, avoiding nuclear war and leading to improved communication (hotline) between superpowers.

Answer:

By a negotiated settlement: the USSR agreed to remove missiles from Cuba in exchange for a US public pledge not to invade Cuba and a secret US agreement to remove Jupiter missiles from Turkey; the US also imposed a naval 'quarantine' during the crisis.