Skip to main content
Chapter 8 of 28
Revision Notes

The United Nations Organization

ICSE · Class 12 · History

Quick revision notes for The United Nations Organization — ICSE Class 12 History. Key concepts, formulas, and definitions for last-minute revision.

44 questions44 flashcards5 concepts

Interactive on Super Tutor

Studying The United Nations Organization? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.

1,000+ Class 12 students started this chapter today

A timeline illustrating the key dates related to the formation of the United Nations, including its establishment date and the current number of member states.
Super Tutor

Learn better with visuals Super Tutor has hundreds of illustrations like this across every chapter — all free to try.

Get started

Key Topics to Revise

1

Origin, Aims, and Basic Idea

  • The UNO officially came into existence in October 1945 after the Second World War.
  • It was formed to replace the League of Nations, which had failed to restrain aggressive dictators like Hitler and Mussolini.
  • The UN Charter was drawn up in San Francisco in 1945 and was based on earlier proposals made at Dumbarton Oaks in 1944 by the USSR, the USA, China, and Britain.
2

Structure of the United Nations

  • The seven main organs of the UN are the General Assembly, Security Council, Secretariat, International Court of Justice, Trusteeship Council, Economic and Social Council, and the International Crimina
  • The General Assembly is the meeting of representatives from all member nations; each nation has one vote and can send up to five representatives.
  • The General Assembly meets once a year from September for about three months, with special sessions possible in a crisis.
3

Decision-Making in the UN

  • Membership applications must be approved by the Security Council and then by a two-thirds majority in the General Assembly.
  • A two-thirds majority in the General Assembly is required for important issues such as admitting or expelling members and peace-related action.
  • The Security Council can act quickly in a crisis, but the veto can block action.
4

Secretary-Generals and Their Role

  • The Secretary-General heads the Secretariat and acts as the main spokesperson for the UN.
  • The post is deliberately filled by a person from a country that is not a major power to support impartiality.
  • Chronological list of Secretaries-General includes Trygve Lie, Dag Hammarskjöld, U Thant, Kurt Waldheim, Javier Pérez de Cuellar, Boutros Boutros-Ghali, Kofi Annan, Ban Ki-moon, and António Guterres.

Get complete notes with diagrams and examples

Full Notes

Key Concepts

The UNO came into existenceThe UN was formed to preserveThe General Assembly is the meetingThe Security Council sits in permanentAny permanent member can block

Frequently Asked Questions

What are the important topics in The United Nations Organization for ICSE Class 12 History?
Key topics in The United Nations Organization include The United Nations Organization - Complete Structure, UN Organization Structure and Functions, Structure and Organs of the United Nations. These are the concepts ICSE Class 12 examiners draw on most — study them first, then practise related questions.
How to score full marks in The United Nations Organization — ICSE Class 12 History?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

For serious students

Get the full The United Nations Organization chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 12 History.