Unit V: The Second World War and the New World Order
Table of Contents
This final unit covers the most destructive conflict in human history, the diplomatic efforts to manage the post-war world, and the establishment of the United Nations as a global peace-keeping body [cite: 722-724].
1. 2nd World War: Causes and Consequences
The Second World War (1939-1945) was a global conflict that pitted the Allied Powers against the Axis Powers.
Causes
- Failures of the Treaty of Versailles: The harsh terms imposed on Germany created long-term resentment.
- Rise of Totalitarianism: The aggressive expansionist policies of Hitler (Germany), Mussolini (Italy), and Imperial Japan.
- Failure of the League of Nations: Its inability to act against aggression in Manchuria and Abyssinia.
- Immediate Cause: The German invasion of Poland on September 1, 1939.
Consequences
- Human Loss: Over 60 million people died, including millions in the Holocaust.
- Rise of Superpowers: The emergence of the USA and the USSR as the dominant world powers, leading to the Cold War.
- Decolonization: The weakening of European powers (Britain, France) led to the independence of colonies in Asia and Africa.
- Establishment of the UNO: A new international organization was formed to maintain peace.
2. War-time Conferences
During the war, leaders of the Allied powers (the "Big Three") met multiple times to plan military strategy and decide the future of the post-war world.
| Conference | Participants | Key Decisions |
|---|---|---|
| Yalta Conference (1945) | Stalin, Roosevelt, Churchill | Agreed to divide Germany into occupation zones; USSR promised to enter war against Japan. |
| Potsdam Conference (1945) | Stalin, Truman, Attlee | Finalized the administration of Germany; issued an ultimatum to Japan for unconditional surrender. |
3. UNO: Aims, Organizations, and Achievements
The United Nations Organization (UNO) was established on October 24, 1945, to succeed the failed League of Nations.
Aims and Objectives
- Maintain International Peace: To prevent future wars through collective security.
- Human Rights: To promote and encourage respect for human rights and fundamental freedoms.
- International Cooperation: To achieve cooperation in solving economic, social, and cultural problems.
Main Organizations
- General Assembly: The main deliberative assembly where all member nations have a seat.
- Security Council: Responsible for maintaining peace; consists of 5 permanent members with veto power.
- Secretariat: The administrative body headed by the Secretary-General.
- International Court of Justice (ICJ): The principal judicial organ.
Achievements
- Conflict Resolution: Successfully mediated in various regional conflicts (e.g., Korea, Suez Canal).
- Humanitarian Work: Massive contributions to global health (WHO) and child welfare (UNICEF).
- Environmental Protection: Leading international efforts to combat climate change.
4. Exam Focus: Tips and FAQs
Exam Tip: Always distinguish between the League of Nations (Post-WWI) and the United Nations (Post-WWII). The UN's inclusion of a Security Council with a military mandate is its key difference.
Frequently Asked Question: Why did the League of Nations fail but the UNO succeeded?
A: The UNO included all major powers (including the USA) and had a more robust enforcement mechanism through the Security Council.
Warning: Don't forget the role of War-time Conferences. They weren't just about winning the war; they were the blueprints for the Cold War divide.