Here is the completely updated `question.php`. I added the missing `$breadcrumbs` array and defined `$category_name` and `$topic_name` right before the header is included. This ensures that `header.php` generates the correct Breadcrumb Schema, page title, and meta description for single question pages. Replace your entire `question.php` with this: ```php World War II Questions
Q. World War II began on which date?
August 15, 1939
September 3, 1939
December 7, 1941
September 1, 1939

Explanation:

WWII began on September 1, 1939, when Germany invaded Poland.

Q. Which country invaded Poland in 1939, triggering WWII?
Italy
Japan
Soviet Union
Germany

Explanation:

Nazi Germany invaded Poland on September 1, 1939.

Q. The attack on Pearl Harbor occurred on:
December 7, 1941
August 6, 1945
June 6, 1944
September 1, 1939

Explanation:

Japan attacked Pearl Harbor on December 7, 1941, bringing the US into the war.

Q. D-Day (Normandy landings) occurred on:
June 6, 1944
May 8, 1945
September 1, 1939
December 7, 1941

Explanation:

D-Day was June 6, 1944, when Allied forces landed in Normandy, France.

Q. Who was the British Prime Minister for most of WWII?
Anthony Eden
Winston Churchill
Clement Attlee
Neville Chamberlain

Explanation:

Winston Churchill led Britain from May 1940 until the end of the war in Europe.

Q. Who was the leader of Nazi Germany during WWII?
Joseph Goebbels
Heinrich Himmler
Adolf Hitler
Hermann Göring

Explanation:

Adolf Hitler led Nazi Germany throughout WWII until his suicide in April 1945.

Q. Who was the leader of the Soviet Union during WWII?
Joseph Stalin
Lenin
Trotsky
Khrushchev

Explanation:

Joseph Stalin led the USSR throughout WWII.

Q. The US President who led America into WWII was:
Dwight Eisenhower
Herbert Hoover
Harry S. Truman
Franklin D. Roosevelt

Explanation:

Franklin D. Roosevelt led the US into WWII; Harry Truman succeeded him in April 1945.

Q. Operation Barbarossa was:
Italian invasion of Ethiopia
Germany's invasion of the Soviet Union
Japanese attack on Pearl Harbor
Allied invasion of Normandy

Explanation:

Operation Barbarossa (June 1941) was Nazi Germany's invasion of the Soviet Union.

Q. The Battle of Stalingrad (1942–43) was a turning point because:
Germany's defeat marked the Eastern Front turning point
Italy joined the Allies
The US entered the war
Japan surrendered

Explanation:

The Soviet victory at Stalingrad marked the turning point on the Eastern Front, from which Germany never recovered.

Q. The Battle of Midway (1942) was fought between:
US and Japan
Australia and Japan
Britain and Japan
US and Germany

Explanation:

The Battle of Midway was fought between the US and Japan in the Pacific; it was a decisive US victory.

Q. The Axis powers in WWII included:
Japan, China, and Germany
Germany, Italy, and Japan
Germany, France, and Italy
Italy, Spain, and Germany

Explanation:

The Axis powers were primarily Germany, Italy, and Japan.

Q. The Allied powers in WWII included:
Germany, Italy, and Japan
Britain, Germany, and Japan
Britain, US, USSR, and France
France, Spain, and Italy

Explanation:

The main Allies were Britain, the US, the USSR, France, and China.

Q. The Holocaust refers to:
The Japanese occupation of China
Nazi genocide of six million Jews
The Soviet famine
The bombing of London

Explanation:

The Holocaust was the Nazi genocide of approximately six million Jews, along with other victims.

Q. VE Day (Victory in Europe) was celebrated on:
August 6, 1945
September 2, 1945
May 8, 1945
June 6, 1944

Explanation:

VE Day was May 8, 1945, marking Germany's unconditional surrender.

Q. Atomic bomb was dropped on Hiroshima on:
September 2, 1945
August 9, 1945
May 8, 1945
August 6, 1945

Explanation:

The US dropped an atomic bomb on Hiroshima on August 6, 1945.

Q. The second atomic bomb was dropped on which city?
Tokyo
Kyoto
Hiroshima
Nagasaki

Explanation:

The second atomic bomb was dropped on Nagasaki on August 9, 1945.

Q. Japan formally surrendered on:
August 15, 1945
September 2, 1945
May 8, 1945
August 6, 1945

Explanation:

Japan formally surrendered on September 2, 1945, aboard the USS Missouri, ending WWII.

Q. The Manhattan Project developed:
The atomic bomb
Radar technology
The jet engine
Penicillin

Explanation:

The Manhattan Project was the US-led research program that developed the atomic bomb.

Q. The Yalta Conference (February 1945) was held between:
Truman, Churchill, and Stalin
Roosevelt, Chamberlain, and Stalin
Eisenhower, Churchill, and Stalin
Roosevelt, Churchill, and Stalin

Explanation:

Yalta was attended by Roosevelt, Churchill, and Stalin to plan post-war Europe.

Q. The Potsdam Conference (July–August 1945) was attended by:
Eisenhower, Churchill, and Stalin
Truman, Churchill/Attlee, and Stalin
Roosevelt, Churchill, and Stalin
Truman, Roosevelt, and Stalin

Explanation:

Potsdam was attended by Truman, Churchill (later Attlee), and Stalin.

Q. The Luftwaffe was:
The German air force
The German navy
The Italian air force
The German army

Explanation:

The Luftwaffe was the German air force during WWII.

Q. The Battle of Britain was fought primarily in:
The Atlantic Ocean
North Africa
The air over Britain
The English Channel only

Explanation:

The Battle of Britain (1940) was an air battle over British skies between the RAF and Luftwaffe.

Q. The Axis power that surrendered first was:
Hungary
Germany
Japan
Italy

Explanation:

Italy surrendered in September 1943, followed by Germany (May 1945) and Japan (September 1945).

Q. The Nuremberg Trials prosecuted:
Italian leaders
Japanese leaders only
Soviet leaders
Nazi leaders for war crimes

Explanation:

The Nuremberg Trials (1945–46) prosecuted Nazi leaders for war crimes and crimes against humanity.

```