Answer: A. John F. Kennedy
Explanation: John Fitzgerald Kennedy, often referred to by his initials JFK was the 35th president of the United States from January 1961 until his assassination in November 1963. His presidency was associated with the 3 events above.
In 1960 Castro took over U.S. oil refineries in Cuba which resulted in U.S. no longer buying Cuban sugar and Castro took over all of U.S. businesses in Cuba. This led President Kennedy to authorize the Bay of Pigs invasion in 1961 in an attempt to overthrow the Communist government of Fidel Castro but the attempt failed.
The Berlin Wall, completed in August 1961 was the division between West Berlin and East Germany from 1961 up until 1989 and served as the symbolic boundary between democracy and Communism during the Cold War.
The Cuban Missile crisis of October 1962 was a 13-day confrontation between the Soviet Union with Cuba and the United States. The Soviets had installed nuclear missiles in Cuba, just 90 miles off the coast of America. President John F. Kennedy and Premier Nikita Khrushchev had to reach a compromise and this was the moment in which the Cold War came closest to turning into a nuclear conflict.