World Wars: Questions & Answers

The causes, battles and consequences of World War I and World War II.

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Quick answers

In which year did World War II end?

Answer: 1945

World War II ended in 1945, with Germany surrendering in May and Japan surrendering in September following the atomic bombings of Hiroshima and Nagasaki. Source

Which event is widely considered the trigger for the start of World War I?

Answer: The assassination of Archduke Franz Ferdinand

The assassination of Archduke Franz Ferdinand of Austria-Hungary in Sarajevo in June 1914 set off a chain of alliances that triggered World War I. Source

Which conference in 1945 planned the post-World War II reorganization of Germany and Europe?

Answer: The Yalta Conference

The Yalta Conference in February 1945 brought together Roosevelt, Churchill, and Stalin to plan the post-war reorganization of Germany and Europe. Source

What Happened? A surprise military attack by Japan on a U.S. naval base in Hawaii on December 7, 1941, brought the United States into World War II.

Answer: The attack on Pearl Harbor

The attack on Pearl Harbor on 7 December 1941 was a surprise Japanese military strike that led the United States to formally enter World War II. Source

Where Did It Happen? The largest tank battle in history took place in 1943 near this Soviet city, marking a turning point on the Eastern Front.

Answer: Kursk

The Battle of Kursk in 1943 near Kursk, USSR, was the largest tank battle in history and a major turning point on the Eastern Front of World War II. Source

When Did It Happen? In what year did World War I begin?

Answer: 1914

World War I began in 1914 following the assassination of Archduke Franz Ferdinand and a rapid chain of alliance-driven declarations of war. Source

Which Came First? Which of these World War II events happened earlier?

Answer: The invasion of Poland

Germany's invasion of Poland in September 1939 marked the start of World War II in Europe, well before D-Day in 1944 and the atomic bombings in 1945. Source

The Treaty of Versailles, signed in 1919, officially ended which war?

Answer: World War I

The Treaty of Versailles, signed in June 1919, formally ended World War I and imposed significant penalties on Germany. Source

On the first day of which 1916 battle did the British Army suffer about 57,000 casualties?

Answer: Battle of the Somme

On 1 July 1916, the first day of the Battle of the Somme, the British Army suffered about 57,000 casualties, its worst single day. Source

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