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?
Britain and Germany
France and Russia
United States and Soviet Union
China and Japan

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?
Vietnam War
World War I
Korean War
World War II

Explanation:

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

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

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
1948–49
1953
1989

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 Soviet blockade of West Berlin
The building of the Berlin Wall
The Korean War
The Cuban Missile Crisis

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?
1961
1979
1991
1989

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:
1971
1959
1965
1962

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:
Eisenhower and Stalin
Truman and Mao
Reagan and Brezhnev
Kennedy and Khrushchev

Explanation:

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

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

Explanation:

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

Q. The Korean War divided Korea at which parallel?
38th parallel
17th parallel
49th parallel
24th 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:
1969
1961
1957
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:
Yuri Gagarin
Alan Shepard
John Glenn
Neil Armstrong

Explanation:

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

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

Explanation:

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

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

Explanation:

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

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

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
New Deal
Glasnost and perestroika

Explanation:

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

Q. The Soviet Union dissolved in which year?
1993
1989
1991
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
Ronald Reagan
Jimmy Carter

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
1991
1985
1993

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:
Soviet Union
China
Western Europe
Eastern 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:
Harry Truman
George Kennan
Joseph Stalin
Winston Churchill

Explanation:

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

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