CUET UG History World History World Wars Causes Key Events Consequences

Must-Know (15–20 detailed bullets)

• The First World War began in 1914 after the assassination of Archduke Franz Ferdinand of Austria-Hungary on June 28, 1914, in Sarajevo by Gavrilo Princip, a member of the Black Hand.
• The Triple Alliance (1882) included Germany, Austria-Hungary, and Italy; it was a key pre-WWI military pact.
• The Triple Entente (1907) consisted of Britain, France, and Russia, formed in response to German expansionism.
• The Schlieffen Plan (1905) was Germany’s strategy to avoid a two-front war by quickly defeating France before turning to Russia; it failed by September 1914 at the First Battle of the Marne.
• The Battle of the Somme (July–November 1916) resulted in over 1 million casualties; British forces suffered 57,470 casualties on the first day alone.
• Trench warfare on the Western Front led to stalemate; conditions included mud, rats, and diseases like trench foot.
• The United States entered WWI in April 1917 due to unrestricted submarine warfare and the Zimmermann Telegram.
• The Treaty of Versailles was signed on June 28, 1919, exactly five years after the assassination of Franz Ferdinand.
• Article 231 of the Treaty of Versailles, the "War Guilt Clause," forced Germany to accept full responsibility for the war.
• Germany lost 13% of its territory under the Treaty of Versailles, including Alsace-Lorraine to France and the Saar Basin under League of Nations control.
• The League of Nations was established in 1920 under the Treaty of Versailles, with its headquarters in Geneva; the U.S. never joined.
• The Second World War began on September 1, 1939, when Germany invaded Poland using Blitzkrieg tactics.
• The Molotov-Ribbentrop Pact (August 1939) was a non-aggression treaty between Nazi Germany and the Soviet Union, including secret protocols to divide Eastern Europe.
• The attack on Pearl Harbor occurred on December 7, 1941, leading the U.S. to declare war on Japan the next day.
• The D-Day invasion (Operation Overlord) began on June 6, 1944, with Allied landings on the beaches of Normandy, France.
• The Holocaust resulted in the systematic murder of approximately six million Jews by Nazi Germany.
• The atomic bombs were dropped on Hiroshima (August 6, 1945) and Nagasaki (August 9, 1945), leading to Japan’s surrender on September 2, 1945.
• The United Nations was founded on October 24, 1945, replacing the League of Nations, with 51 original member states.
• The Nuremberg Trials (1945–1946) prosecuted major Nazi war criminals; 12 were sentenced to death.
• The Cold War emerged as a geopolitical conflict between the U.S. and USSR after WWII, marked by ideological rivalry but no direct warfare.

Difficulty Level

Intermediate — Requires memorization of precise dates, treaties, and cause-effect chains, but concepts are linear and covered directly in NCERT.

Common CUET Traps (3 bullets)

• Trap: Confusing the Triple Alliance with the Central Powers.
  Avoid: Triple Alliance (pre-war: Germany, Austria-Hungary, Italy); Central Powers (warring: Germany, Austria-Hungary, Ottoman Empire, Bulgaria). Italy switched sides.

• Trap: Believing the League of Nations was effective in preventing WWII.
  Avoid: The League failed to stop aggression by Japan (Manchuria, 1931), Italy (Ethiopia, 1935), and Germany (Rhineland, 1936); it had no military power and lacked U.S. support.

• Trap: Assuming WWII ended in 1944 or 1946.
  Avoid: WWII officially ended on September 2, 1945, when Japan formally surrendered aboard the USS Missouri.

Practice MCQs (5 questions)

Q1. Which event directly triggered the outbreak of the First World War?
A. Germany’s invasion of Belgium
B. The assassination of Archduke Franz Ferdinand
C. The sinking of the Lusitania
D. The formation of the Triple Entente

Answer: B
Explanation: The assassination of Archduke Franz Ferdinand on June 28, 1914, set off a chain of alliances and mobilizations leading to war.
Why others fail: A was a consequence, not a trigger; C and D were earlier developments but not immediate causes.

Q2. The Treaty of Versailles imposed which clause on Germany to assign responsibility for the First World War?
A. Article 10
B. Article 48
C. Article 231
D. Article 14

Answer: C
Explanation: Article 231, the "War Guilt Clause," forced Germany to accept full blame for the war.
Why others fail: Article 10 was part of the League Covenant; Article 48 related to Weimar Constitution; Article 14 was Wilson’s proposal for a league.

Q3. Which of the following was a key feature of the Molotov-Ribbentrop Pact of 1939?
A. Military alliance between USSR and Britain
B. Non-aggression treaty between Germany and the Soviet Union with secret territorial divisions
C. Agreement to jointly invade France
D. Pact to divide the Middle East between colonial powers

Answer: B
Explanation: The pact was a non-aggression treaty between Nazi Germany and the USSR, containing secret protocols to divide Eastern Europe.
Why others fail: A and D are false; C is incorrect as France was invaded by Germany alone in 1940.

Q4. What was the significance of D-Day in WWII?
A. Japan surrendered unconditionally
B. Allied forces launched a major invasion of German-occupied France
C. The Soviet Union declared war on Japan
D. Germany surrendered to the Allies

Answer: B
Explanation: D-Day (June 6, 1944) marked the start of Operation Overlord, the Allied invasion of Normandy.
Why others fail: A occurred in September 1945; C happened in August 1945; D was in May 1945.

Q5. Which of the following best describes the outcome of the Nuremberg Trials?
A. Japanese generals were tried for war crimes in Tokyo
B. Major Nazi leaders were prosecuted by an International Military Tribunal
C. Adolf Hitler was sentenced to life imprisonment
D. The trials were conducted by the United Nations

Answer: B
Explanation: The Nuremberg Trials (1945–1946) were held by the Allied powers to prosecute top Nazi officials for war crimes and crimes against humanity.
Why others fail: A refers to the Tokyo Trials; C is false as Hitler died in 1945; D is incorrect as the UN was not yet fully operational.

Last‑Minute Revision (15–20 one‑liners)

• ⚠️ WWI began: 1914; ended: 1918.
• ⚠️ WWII began: 1939; ended: 1945.
• ⚠️ Treaty of Versailles signed: June 28, 1919.
• ⚠️ League of Nations founded: 1920.
• ⚠️ U.S. entered WWI: 1917; entered WWII: 1941.
• ⚠️ Assassination of Franz Ferdinand: June 28, 1914, Sarajevo.
• ⚠️ Germany invaded Poland: September 1, 1939 – start of WWII.
• ⚠️ Pearl Harbor attack: December 7, 1941.
• ⚠️ D-Day: June 6, 1944 – Normandy landings.
• ⚠️ Hiroshima bomb: August 6, 1945; Nagasaki: August 9, 1945.
• ⚠️ Japan surrendered: September 2, 1945.
• ⚠️ UN founded: October 24, 1945.
• ⚠️ Article 231 = War Guilt Clause – Germany blamed for WWI.
• ⚠️ Holocaust: ~6 million Jews killed.
• ⚠️ Molotov-Ribbentrop Pact: Aug 1939, Nazi-Soviet non-aggression + secret partitions.
• ⚠️ Schlieffen Plan: Germany’s failed plan to defeat France quickly.
• ⚠️ Battle of Somme: 1916, >1 million casualties.
• ⚠️ Nuremberg Trials: 1945–46, Nazi leaders prosecuted.
• ⚠️ Triple Alliance: Germany, Austria-Hungary, Italy (1882).
• ⚠️ Triple Entente: Britain, France, Russia (1907).
• Mnemonic: “G.A.I.N.S.” for causes of WWI – Grievances, Alliances, Imperialism, Nationalism, Schlieffen Plan.