UPSC Civil Services (IAS) Prelims 2007: Complete Question Paper Analysis & Preparation Strategy

Subject-wise Distribution

SubjectQuestionsPercentage
Science & Technology3422.8%
Miscellaneous & General Knowledge3322.1%
Geography2315.4%
History & Culture1912.8%
International Relations & Global Affairs138.7%
Polity & Governance138.7%
Economy106.7%
Environment & Ecology42.7%

Topic-wise Breakdown

SubjectTopicQuestions
Science & TechnologyBasic Science (Physics, Chemistry, Biology)22
Miscellaneous & General KnowledgeImportant Days, Places & Events17
History & CultureNational Movement (1857–1947)11
GeographyMaps & Locations11
International Relations & Global AffairsInternational Organisations & Groupings10
Miscellaneous & General KnowledgePersons in News, Books & Authors8
Miscellaneous & General KnowledgeSports, Games & Awards8
Science & TechnologySpace & Defence Technology6
History & CultureModern India (Pre-1857)5
GeographyIndian Economic Geography4
GeographyWorld Physical Geography4
Science & TechnologyBiotechnology & Health4
International Relations & Global AffairsIndia's Bilateral & Regional Relations3
Polity & GovernanceUnion Executive3
EconomyMoney, Banking & Inflation3

Decoding the 2007 UPSC IAS Prelims: A Strategic Masterclass in General Studies

The year 2007 stands as a landmark in the evolution of the Union Public Service Commission (UPSC) Civil Services Examination. For any serious aspirant, analyzing the 2007 Prelims is not just a trip down memory lane; it is a clinical exercise in understanding the "DNA" of the UPSC. In 2007, the Prelims consisted of two papers: General Studies and an Optional Subject (which was later replaced by CSAT in 2011). The General Studies paper featured 149 questions (a slight deviation from the standard 150), testing the breadth and depth of a candidate's awareness. With negative marking firmly in place (1/3rd deduction for wrong answers), the 2007 paper was a test of precision over mere guesswork.

Why does this analysis matter today? Because UPSC is cyclical. The themes that dominated 2007—such as the heavy emphasis on Basic Sciences and International Organizations—frequently resurface in modern formats. By dissecting this paper, we can decode the examiner's mindset, identifying how they blend static knowledge with dynamic current affairs. This article serves as your comprehensive mentor, guiding you through the nuances of the 2007 paper and providing a roadmap for contemporary preparation.

2. Subject-wise Deep Dive: Where the Battle Was Won

Science & Technology (34 Questions | 22.8%)

In 2007, Science & Technology was the undisputed king. With nearly 23% of the paper dedicated to this segment, it acted as the "filter" subject. Interestingly, 22 of these questions were rooted in Basic Sciences (Physics, Chemistry, and Biology). This was not high-level research science, but "Science in Everyday Life"—the kind found in NCERTs from Class 6 to 10.

  • Key Topics: Human physiology, plant biology, chemical properties of daily-use substances, and fundamental laws of physics. Space and Defence also saw 6 targeted questions, focusing on India's missile programs and satellite launches.
  • Recommended Books: NCERTs (Class 6-10) are non-negotiable. For the "Tech" part, the Science & Technology section of The Hindu and Tata McGraw Hill guides are essential.
  • Common Mistake: Ignoring Biology. Aspirants often focus too much on "High-Tech" (AI, Nano) and forget basic human anatomy or nutrition, which were the backbone of the 2007 paper.

Miscellaneous & General Knowledge (33 Questions | 22.1%)

This section was the "wild card" of 2007. It covered a staggering array of topics, from Important Days and Places to Sports and Books. 17 questions were dedicated specifically to events and locations, while 8 focused on Sports and Awards.

  • Key Topics: Grand Slams, Olympic history, prestigious literary awards (Jnanpith, Booker), and significant global anniversaries.
  • Standard Reference: Lucent’s General Knowledge or the Manorama Yearbook.
  • Common Mistake: Treating this as "unpredictable" and not studying it. While UPSC has reduced direct "fact-heavy" GK recently, the underlying themes of "Places in News" remain vital.

Geography (23 Questions | 15.4%)

Geography in 2007 was highly visual and analytical. Out of 23 questions, 11 were directly related to Maps and Locations. This required an intimate knowledge of both Indian and World physical geography.

  • Key Topics: Mapping of rivers, mountain passes, and international borders. Indian Economic Geography (4 questions) focused on mineral distribution and agricultural zones.
  • Recommended Books: Certificate Physical and Human Geography by Goh Cheng Leong and NCERT Class 11 & 12 (India Physical and World Physical).
  • Common Mistake: Studying Geography without an Atlas. In 2007, if you couldn't visualize the location of a sea or a mountain range, you lost marks.

History & Culture (19 Questions | 12.8%)

The 2007 paper stayed true to the classic UPSC tradition: a heavy tilt toward the National Movement (1857–1947), which accounted for 11 questions. Modern India (Pre-1857) followed with 5 questions.

  • Key Topics: The role of specific leaders, the evolution of British administrative policies, and the nuances of the Gandhian era.
  • Recommended Books: India’s Struggle for Independence by Bipin Chandra and the Tamil Nadu State Board History books (Class 11 & 12).
  • Common Mistake: Memorizing dates but failing to understand the "causality" of events. UPSC asks "Why" and "How" more than "When."

International Relations & Polity (26 Questions Total | 17.4%)

Polity and IR were balanced in 2007. IR focused heavily on International Organizations (10 questions), such as the UN, WTO, and regional groupings like ASEAN or SAARC. Polity (13 questions) focused on the core constitutional framework.

  • Key Topics: Preamble, Fundamental Rights, Parliamentary procedures, and the functions of global bodies.
  • Recommended Books: Indian Polity by M. Laxmikanth is the gold standard. For IR, Challenge and Strategy by Rajiv Sikri is excellent for conceptual clarity.
  • Common Mistake: Forgetting the "Current" aspect of Polity. Many questions in 2007 were linked to recent Supreme Court judgments or legislative amendments.

3. Topic Trends & Pattern Analysis: The Examiner’s Mindset

The 2007 paper revealed a specific "Examiner Mindset" that emphasized applied knowledge. While the number of questions on the Environment was low (only 4), the seeds of the current "Environment-heavy" trend were being sown through Geography and Science questions.

The Dominance of Fact-Plus-Logic: The 2007 paper was not purely factual. Even in the Miscellaneous section, questions were framed to test if the candidate understood the significance of a person or an event. For example, a question on a "Person in News" wasn't just about the name, but about the organization they headed or the movement they led.

The Shift Toward Globalism: With 13 questions on IR and Global Affairs, 2007 marked a year where UPSC wanted future bureaucrats to be globally aware. This was the era of India's rising economic profile, and the paper reflected this through questions on international trade and global groupings.

Comparison with Modern Patterns: Today, the "Miscellaneous" section has shrunk, and "Environment & Ecology" has expanded significantly (often 15-20 questions). However, the 2007 trend of "Map-based Geography" and "Constitutional Polity" remains the bedrock of the Prelims to this day.

4. Preparation Strategy: A Roadmap for Success

To tackle a paper of this complexity, your preparation must be structured. Here is a recommended time-allocation and resource guide based on the 2007 trends:

Subject-wise Strategy & Resources

  • Polity (15% of Time): Focus on M. Laxmikanth. Read the "Parliament" and "Judiciary" chapters at least three times. Supplement this with Our Constitution by Subhash Kashyap for a narrative understanding of constitutional evolution.
  • History (20% of Time): Modern History is your highest ROI (Return on Investment). Use Spectrum’s A Brief History of Modern India for quick revision and Bipin Chandra for deep dives into the National Movement.
  • Geography (15% of Time): Spend 30 minutes daily on an Atlas (Oxford or Orient Blackswan). Focus on "Indian Economic Geography"—where are the bauxite mines? Where is the Golden Quadrilateral?
  • Science & Technology (15% of Time): Do not ignore the NCERTs. For current developments, follow the Science Media Center or the PIB Science section.
  • Economy (10% of Time): Focus on concepts like Inflation, GDP, and Banking. Ramesh Singh is a good reference, but the Economic Survey and Budget are your primary sources for data.
  • Environment (10% of Time): Even though 2007 had few questions, modern trends demand focus. Use Shankar IAS and the Ministry of Environment (MoEFCC) annual reports.

How to Use PYQs (Previous Year Questions)

Don't just solve the 2007 paper; reverse-engineer it. If a question was asked about the WTO, don't just learn the answer. Research the WTO's latest ministerial conference, its dispute settlement body, and India's stance on "Amber Box" subsidies. This is how you turn a 2007 question into a 2025 prediction.

5. Answer Elimination Techniques: The Art of Intelligent Guessing

In 2007, as in now, nobody knows all 149 answers. The difference between a qualifier and a non-qualifier is the ability to eliminate options. Here are four battle-tested techniques:

1. The "Extreme Word" Filter

In statement-based questions, words like "All," "Always," "Never," "Only," or "Must" are often red flags. In the 2007 Polity and Science sections, statements that were too rigid were frequently incorrect. Real-world governance and science usually have exceptions.

2. The "Match the Following" Hack

UPSC often gives you a "freebie" in matching questions. If you are 100% sure about even one pair, you can often eliminate two or three of the four options. In 2007, this was particularly useful in Geography (Rivers/Tributaries) and Miscellaneous (Awards/Fields).

3. Contextual Association

If you encounter a "Person in News" or an "International Organization" you don't recognize, try to associate the name phonetically or linguistically. Does the name sound Japanese? Scandinavian? This can help you link it to a specific region or bloc mentioned in the options.

4. The 50-50 Rule

If you can eliminate two options, you must take the risk. Mathematically, over 10 such questions, the probability of a positive score is high, even with negative marking. However, if you can't eliminate even one option, skip the question entirely.

6. Current Affairs Integration: The Static-Dynamic Link

The 2007 paper was a masterclass in "Static-Dynamic Integration." A question might be about a static concept (like the powers of the President), but it was likely triggered by a current event (like a Presidential election or a controversial ordinance).

Building the Habit

  • The Daily Ritual: Read The Hindu or The Indian Express for 60 minutes. Focus on the Editorial, National, and Economy pages. Ignore political bickering.
  • Note-Making: Don't just copy news. Create "Topic Files." If there is news about the "G-20," add it to your International Relations file where you've already written about the G-7 and BRICS.
  • Magazines: Yojana and Kurukshetra are vital for the "Economy" and "Social Issues" sections. They provide the government’s perspective, which is what UPSC expects in your answers.

7. Smart Preparation Tips: From Aspirant to Officer

The 1-year vs. 6-month Plan

If you have a year, spend the first 6 months on "Mains-cum-Prelims" (History, Polity, Geography, Optional). The last 4 months should be "Prelims-exclusive," focusing on fact-retention and mock tests. If you have only 6 months, you must adopt a "Reverse Engineering" approach—start with PYQs and mock tests, and read only the topics that appear frequently.

Revision Techniques: The 1-3-7-30 Rule

Memory fades quickly. Revise what you read today after 1 day, then after 3 days, 7 days, and finally after 30 days. This moves information from short-term to long-term memory. For a paper like 2007, which had 33 Miscellaneous questions, frequent revision of facts is the only way to survive.

Mock Test Analysis

Don't just look at your score. Analyze why you got a question wrong. Was it a "Silly Mistake" (misreading the question)? A "Knowledge Gap" (never read the topic)? Or a "Logical Error" (wrong elimination)? Maintain a "Mistake Log" and review it every Sunday.

8. Key Takeaways & Action Items

The 2007 UPSC Prelims analysis teaches us that while the "packaging" of the exam changes, the "core" remains the same. It rewards those who have a solid grasp of basics and an eagle eye for current developments.

Top 5 Books to Prioritize:

  1. Indian Polity by M. Laxmikanth (The Bible for 13+ questions).
  2. Modern History by Spectrum/Bipin Chandra (Crucial for the National Movement).
  3. NCERT Science (6-10) (Essential for the 22+ Basic Science questions).
  4. Certificate Physical Geography by Goh Cheng Leong (The key to 15% of the paper).
  5. Oxford Student Atlas (Your map-reading companion).

Immediate Next Steps:

  • Step 1: Download the 2007 GS Paper 1 and attempt it under a 2-hour timer. Don't worry about the score; focus on the "feel" of the questions.
  • Step 2: Categorize your wrong answers. Are they mostly in Science? Or Geography maps? This is your "Weak Area Map."
  • Step 3: Start your day with the subject you fear most. If Science & Tech scares you, tackle a chapter of NCERT Biology before breakfast.
  • Step 4: Integrate one PYQ analysis into your daily study routine. One year per week is a great pace.

Success in UPSC is not about knowing everything under the sun; it is about knowing what the sun shines on most often. In 2007, it shone on Science, Geography, and the National Movement. In your attempt, it might shine elsewhere, but the discipline of analysis you've learned today will be your greatest asset. Stay focused, stay consistent, and remember: every IAS officer once stood exactly where you are today—analyzing the past to conquer the future.

Complete Question Index - UPSC Civil Services (IAS) Prelims 2007

Click on any question number to practice and view detailed explanation:

Q#SubjectPractice Link
1International Relations & Global AffairsSolve Question 1
1International Relations & Global AffairsSolve Question 1
2International Relations & Global AffairsSolve Question 2
2International Relations & Global AffairsSolve Question 2
3History & CultureSolve Question 3
3History & CultureSolve Question 3
4GeographySolve Question 4
4GeographySolve Question 4
5Miscellaneous & General KnowledgeSolve Question 5
5Miscellaneous & General KnowledgeSolve Question 5
6EconomySolve Question 6
6EconomySolve Question 6
7Miscellaneous & General KnowledgeSolve Question 7
7Miscellaneous & General KnowledgeSolve Question 7
8EconomySolve Question 8
8EconomySolve Question 8
9Miscellaneous & General KnowledgeSolve Question 9
9Miscellaneous & General KnowledgeSolve Question 9
10Science & TechnologySolve Question 10
10Science & TechnologySolve Question 10
11GeographySolve Question 11
11GeographySolve Question 11
12GeographySolve Question 12
12GeographySolve Question 12
13Science & TechnologySolve Question 13
13Science & TechnologySolve Question 13
14Science & TechnologySolve Question 14
14Science & TechnologySolve Question 14
15Polity & GovernanceSolve Question 15
15Polity & GovernanceSolve Question 15
16Miscellaneous & General KnowledgeSolve Question 16
16Miscellaneous & General KnowledgeSolve Question 16
17Miscellaneous & General KnowledgeSolve Question 17
17Miscellaneous & General KnowledgeSolve Question 17
18Miscellaneous & General KnowledgeSolve Question 18
18Miscellaneous & General KnowledgeSolve Question 18
19Miscellaneous & General KnowledgeSolve Question 19
19Miscellaneous & General KnowledgeSolve Question 19
20Science & TechnologySolve Question 20
20Science & TechnologySolve Question 20
21Science & TechnologySolve Question 21
21Science & TechnologySolve Question 21
22Miscellaneous & General KnowledgeSolve Question 22
22Miscellaneous & General KnowledgeSolve Question 22
23GeographySolve Question 23
23GeographySolve Question 23
24Miscellaneous & General KnowledgeSolve Question 24
24Miscellaneous & General KnowledgeSolve Question 24
25International Relations & Global AffairsSolve Question 25
25International Relations & Global AffairsSolve Question 25
26Science & TechnologySolve Question 26
26Science & TechnologySolve Question 26
27Science & TechnologySolve Question 27
27Science & TechnologySolve Question 27
28Science & TechnologySolve Question 28
28Science & TechnologySolve Question 28
29International Relations & Global AffairsSolve Question 29
29International Relations & Global AffairsSolve Question 29
30EconomySolve Question 30
30EconomySolve Question 30
31Miscellaneous & General KnowledgeSolve Question 31
31Miscellaneous & General KnowledgeSolve Question 31
32International Relations & Global AffairsSolve Question 32
32International Relations & Global AffairsSolve Question 32
33GeographySolve Question 33
33GeographySolve Question 33
34Science & TechnologySolve Question 34
34Science & TechnologySolve Question 34
35Miscellaneous & General KnowledgeSolve Question 35
35Miscellaneous & General KnowledgeSolve Question 35
36Miscellaneous & General KnowledgeSolve Question 36
36Miscellaneous & General KnowledgeSolve Question 36
37EconomySolve Question 37
37EconomySolve Question 37
38International Relations & Global AffairsSolve Question 38
38International Relations & Global AffairsSolve Question 38
39Miscellaneous & General KnowledgeSolve Question 39
39Miscellaneous & General KnowledgeSolve Question 39
40Miscellaneous & General KnowledgeSolve Question 40
40Miscellaneous & General KnowledgeSolve Question 40
41Miscellaneous & General KnowledgeSolve Question 41
41Miscellaneous & General KnowledgeSolve Question 41
42Miscellaneous & General KnowledgeSolve Question 42
42Miscellaneous & General KnowledgeSolve Question 42
43Miscellaneous & General KnowledgeSolve Question 43
43Miscellaneous & General KnowledgeSolve Question 43
44Miscellaneous & General KnowledgeSolve Question 44
44Miscellaneous & General KnowledgeSolve Question 44
45Environment & EcologySolve Question 45
45Environment & EcologySolve Question 45
46Science & TechnologySolve Question 46
46Science & TechnologySolve Question 46
47Miscellaneous & General KnowledgeSolve Question 47
47Miscellaneous & General KnowledgeSolve Question 47
48Science & TechnologySolve Question 48
48Science & TechnologySolve Question 48
49EconomySolve Question 49
49EconomySolve Question 49
50International Relations & Global AffairsSolve Question 50
50International Relations & Global AffairsSolve Question 50
51Miscellaneous & General KnowledgeSolve Question 51
51Miscellaneous & General KnowledgeSolve Question 51
52Miscellaneous & General KnowledgeSolve Question 52
52Miscellaneous & General KnowledgeSolve Question 52
53Miscellaneous & General KnowledgeSolve Question 53
53Miscellaneous & General KnowledgeSolve Question 53
54Miscellaneous & General KnowledgeSolve Question 54
54Miscellaneous & General KnowledgeSolve Question 54
55Miscellaneous & General KnowledgeSolve Question 55
55Miscellaneous & General KnowledgeSolve Question 55
56Miscellaneous & General KnowledgeSolve Question 56
56Miscellaneous & General KnowledgeSolve Question 56
57Miscellaneous & General KnowledgeSolve Question 57
57Miscellaneous & General KnowledgeSolve Question 57
58EconomySolve Question 58
58EconomySolve Question 58
59History & CultureSolve Question 59
59History & CultureSolve Question 59
60Polity & GovernanceSolve Question 60
60Polity & GovernanceSolve Question 60
61Miscellaneous & General KnowledgeSolve Question 61
61Miscellaneous & General KnowledgeSolve Question 61
62Environment & EcologySolve Question 62
62Environment & EcologySolve Question 62
63International Relations & Global AffairsSolve Question 63
63International Relations & Global AffairsSolve Question 63
64Polity & GovernanceSolve Question 64
64Polity & GovernanceSolve Question 64
65Polity & GovernanceSolve Question 65
65Polity & GovernanceSolve Question 65
66EconomySolve Question 66
66EconomySolve Question 66
67International Relations & Global AffairsSolve Question 67
67International Relations & Global AffairsSolve Question 67
68GeographySolve Question 68
68GeographySolve Question 68
69EconomySolve Question 69
69EconomySolve Question 69
70Science & TechnologySolve Question 70
70Science & TechnologySolve Question 70
71Polity & GovernanceSolve Question 71
71Polity & GovernanceSolve Question 71
72EconomySolve Question 72
72EconomySolve Question 72
73International Relations & Global AffairsSolve Question 73
73International Relations & Global AffairsSolve Question 73
74Science & TechnologySolve Question 74
74Science & TechnologySolve Question 74
75Science & TechnologySolve Question 75
75Science & TechnologySolve Question 75
76Science & TechnologySolve Question 76
76Science & TechnologySolve Question 76
77Science & TechnologySolve Question 77
77Science & TechnologySolve Question 77
78EconomySolve Question 78
78EconomySolve Question 78
79Miscellaneous & General KnowledgeSolve Question 79
79Miscellaneous & General KnowledgeSolve Question 79
80Miscellaneous & General KnowledgeSolve Question 80
80Miscellaneous & General KnowledgeSolve Question 80
81GeographySolve Question 81
81GeographySolve Question 81
82Science & TechnologySolve Question 82
82Science & TechnologySolve Question 82
83Polity & GovernanceSolve Question 83
83Polity & GovernanceSolve Question 83
84History & CultureSolve Question 84
84History & CultureSolve Question 84
85GeographySolve Question 85
85GeographySolve Question 85
86GeographySolve Question 86
86GeographySolve Question 86
87Science & TechnologySolve Question 87
87Science & TechnologySolve Question 87
88GeographySolve Question 88
88GeographySolve Question 88
89Science & TechnologySolve Question 89
89Science & TechnologySolve Question 89
90GeographySolve Question 90
90GeographySolve Question 90
91GeographySolve Question 91
91GeographySolve Question 91
92History & CultureSolve Question 92
92History & CultureSolve Question 92
93GeographySolve Question 93
93GeographySolve Question 93
94GeographySolve Question 94
94GeographySolve Question 94
95GeographySolve Question 95
95GeographySolve Question 95
96GeographySolve Question 96
96GeographySolve Question 96
97Environment & EcologySolve Question 97
97Environment & EcologySolve Question 97
98GeographySolve Question 98
98GeographySolve Question 98
99Science & TechnologySolve Question 99
99Science & TechnologySolve Question 99
100Science & TechnologySolve Question 100
100Science & TechnologySolve Question 100
101Science & TechnologySolve Question 101
101Science & TechnologySolve Question 101
102Science & TechnologySolve Question 102
102Science & TechnologySolve Question 102
103Science & TechnologySolve Question 103
103Science & TechnologySolve Question 103
104Polity & GovernanceSolve Question 104
104Polity & GovernanceSolve Question 104
105Miscellaneous & General KnowledgeSolve Question 105
105Miscellaneous & General KnowledgeSolve Question 105
106Science & TechnologySolve Question 106
106Science & TechnologySolve Question 106
107Science & TechnologySolve Question 107
107Science & TechnologySolve Question 107
108History & CultureSolve Question 108
108History & CultureSolve Question 108
109Science & TechnologySolve Question 109
109Science & TechnologySolve Question 109
110International Relations & Global AffairsSolve Question 110
110International Relations & Global AffairsSolve Question 110
111History & CultureSolve Question 111
111History & CultureSolve Question 111
112Science & TechnologySolve Question 112
112Science & TechnologySolve Question 112
113International Relations & Global AffairsSolve Question 113
113International Relations & Global AffairsSolve Question 113
114History & CultureSolve Question 114
114History & CultureSolve Question 114
115GeographySolve Question 115
115GeographySolve Question 115
116GeographySolve Question 116
116GeographySolve Question 116
117GeographySolve Question 117
117GeographySolve Question 117
118GeographySolve Question 118
118GeographySolve Question 118
119GeographySolve Question 119
119GeographySolve Question 119
120Miscellaneous & General KnowledgeSolve Question 120
120Miscellaneous & General KnowledgeSolve Question 120
121History & CultureSolve Question 121
121History & CultureSolve Question 121
122Polity & GovernanceSolve Question 122
122Polity & GovernanceSolve Question 122
123History & CultureSolve Question 123
123History & CultureSolve Question 123
124History & CultureSolve Question 124
124History & CultureSolve Question 124
125History & CultureSolve Question 125
125History & CultureSolve Question 125
126History & CultureSolve Question 126
126History & CultureSolve Question 126
127History & CultureSolve Question 127
127History & CultureSolve Question 127
128History & CultureSolve Question 128
128History & CultureSolve Question 128
129Polity & GovernanceSolve Question 129
129Polity & GovernanceSolve Question 129
130Miscellaneous & General KnowledgeSolve Question 130
130Miscellaneous & General KnowledgeSolve Question 130
131Miscellaneous & General KnowledgeSolve Question 131
131Miscellaneous & General KnowledgeSolve Question 131
132Science & TechnologySolve Question 132
132Science & TechnologySolve Question 132
133Science & TechnologySolve Question 133
133Science & TechnologySolve Question 133
134History & CultureSolve Question 134
134History & CultureSolve Question 134
135Polity & GovernanceSolve Question 135
135Polity & GovernanceSolve Question 135
136History & CultureSolve Question 136
136History & CultureSolve Question 136
137History & CultureSolve Question 137
137History & CultureSolve Question 137
138Science & TechnologySolve Question 138
138Science & TechnologySolve Question 138
139Polity & GovernanceSolve Question 139
139Polity & GovernanceSolve Question 139
140Polity & GovernanceSolve Question 140
140Polity & GovernanceSolve Question 140
141Science & TechnologySolve Question 141
141Science & TechnologySolve Question 141
142Polity & GovernanceSolve Question 142
142Polity & GovernanceSolve Question 142
143Environment & EcologySolve Question 143
143Environment & EcologySolve Question 143
144History & CultureSolve Question 144
144History & CultureSolve Question 144
145Science & TechnologySolve Question 145
145Science & TechnologySolve Question 145
146International Relations & Global AffairsSolve Question 146
146International Relations & Global AffairsSolve Question 146
147GeographySolve Question 147
147GeographySolve Question 147
148Science & TechnologySolve Question 148
148Science & TechnologySolve Question 148
149History & CultureSolve Question 149
149History & CultureSolve Question 149