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 The Cold War Questions
Q. The Cold War primarily opposed which two superpowers?
China and Japan
United States and Soviet Union
Britain and Germany
France and Russia

Explanation:

The Cold War was a geopolitical rivalry between the US and the Soviet Union from ~1947 to 1991.

Q. The Cold War began roughly after which event?
Korean War
World War I
World War II
Vietnam War

Explanation:

The Cold War began in the aftermath of WWII, around 1947.

Q. The Truman Doctrine (1947) pledged to:
Invade the Soviet Union
Abolish nuclear weapons
Unify Germany
Contain communism worldwide

Explanation:

The Truman Doctrine pledged US support to nations resisting communist subjugation, beginning with Greece and Turkey.

Q. The Marshall Plan was designed to:
Create NATO
Fund the Soviet Union
Rebuild Western Europe's economy
Build the atomic bomb

Explanation:

The Marshall Plan (1948) provided US economic aid to rebuild Western Europe and prevent communist influence.

Q. NATO was founded in which year?
1945
1955
1949
1961

Explanation:

NATO (North Atlantic Treaty Organization) was founded in 1949 as a Western defence alliance.

Q. The Warsaw Pact was a military alliance led by:
Yugoslavia
United States
China
Soviet Union

Explanation:

The Warsaw Pact (1955) was a Soviet-led military alliance of Eastern Bloc countries, formed in response to NATO.

Q. The Berlin Blockade occurred in:
1961
1953
1989
1948–49

Explanation:

The Berlin Blockade (1948–49) was the Soviet blockade of West Berlin, countered by the Berlin Airlift.

Q. The Berlin Airlift was a response to:
The Korean War
The Cuban Missile Crisis
The building of the Berlin Wall
The Soviet blockade of West Berlin

Explanation:

The Berlin Airlift supplied West Berlin by air after the Soviet blockade cut off ground access.

Q. The Berlin Wall fell in which year?
1989
1979
1991
1961

Explanation:

The Berlin Wall fell on November 9, 1989, symbolizing the end of the Cold War division of Europe.

Q. The Cuban Missile Crisis occurred in:
1962
1959
1965
1971

Explanation:

The Cuban Missile Crisis (October 1962) was a 13-day standoff between the US and USSR over Soviet missiles in Cuba.

Q. Leaders during the Cuban Missile Crisis were:
Reagan and Brezhnev
Kennedy and Khrushchev
Eisenhower and Stalin
Truman and Mao

Explanation:

The Cuban Missile Crisis involved JFK (US), Khrushchev (USSR), and Castro (Cuba).

Q. The Korean War lasted from:
1955–1960
1945–1948
1960–1965
1950–1953

Explanation:

The Korean War was fought from 1950 to 1953, ending in an armistice.

Q. The Korean War divided Korea at which parallel?
49th parallel
38th parallel
24th parallel
17th parallel

Explanation:

Korea was divided along the 38th parallel, still the de facto border today.

Q. The Vietnam War ended with the fall of Saigon in:
1975
1968
1980
1970

Explanation:

Saigon fell on April 30, 1975, ending the Vietnam War with a communist victory.

Q. The Soviet Union launched Sputnik in:
1957
1961
1969
1949

Explanation:

Sputnik 1 was launched on October 4, 1957, the first artificial satellite, triggering the Space Race.

Q. The first human in space was:
John Glenn
Neil Armstrong
Alan Shepard
Yuri Gagarin

Explanation:

Yuri Gagarin (USSR) became the first human in space on April 12, 1961.

Q. The first man on the Moon was:
Buzz Aldrin
Yuri Gagarin
Michael Collins
Neil Armstrong

Explanation:

Neil Armstrong walked on the Moon on July 20, 1969, during Apollo 11.

Q. The policy of 'détente' refers to:
Nuclear proliferation
Relaxation of Cold War tensions
Arms race escalation
Decolonization

Explanation:

Détente was a period of relaxed US-Soviet tensions in the 1970s.

Q. The Soviet invasion of Afghanistan occurred in:
1969
1989
1975
1979

Explanation:

The USSR invaded Afghanistan in December 1979, souring US-Soviet relations.

Q. Mikhail Gorbachev's reforms in the USSR were called:
Five-Year Plans
Reaganomics
Glasnost and perestroika
New Deal

Explanation:

Gorbachev introduced glasnost (openness) and perestroika (restructuring) in the 1980s.

Q. The Soviet Union dissolved in which year?
1993
1991
1989
1990

Explanation:

The USSR dissolved on December 26, 1991, formally ending the Cold War.

Q. Gorbachev's counterpart in the US during the end of the Cold War was:
Richard Nixon
Bill Clinton
Jimmy Carter
Ronald Reagan

Explanation:

Ronald Reagan (1981–89) and then George H.W. Bush (1989–93) partnered with Gorbachev to end the Cold War.

Q. The Warsaw Pact was dissolved in:
1989
1993
1985
1991

Explanation:

The Warsaw Pact was formally dissolved in 1991 following the collapse of communist regimes in Eastern Europe.

Q. The Marshall Plan provided aid primarily to:
Eastern Europe
China
Soviet Union
Western Europe

Explanation:

The Marshall Plan (1948–51) provided $13 billion in aid to Western European nations.

Q. The 'Iron Curtain' was a term coined by:
Joseph Stalin
Harry Truman
Winston Churchill
George Kennan

Explanation:

Winston Churchill coined 'Iron Curtain' in his 1946 Fulton speech to describe the Soviet division of Europe.

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