Who commissioned the building of the Berlin Wall?

A. Joseph Stalin

B. Harry Truman

C. John F. Kennedy

D. Nikita Khrushchev

Berlin Wall was built by the authorities of East Berlin, which was under the Soviet Union at the time: so it couldn't have been a leader from the west, such as B and C

The correct answer is A: It was Nikita Khrushchev. Stalin was dead by the time the wall was built.