Question

A main event of President Johnson's administration was: the failed Bay of Pigs invasion conflict with Russia over missiles in Cuba active U.S. involvement in Vietnam

Answer 1

On April 17, 1961, 1400 Cuban exiles launched what became a botched invasion at the Bay of Pigs on the south coast of Cuba. In 1959, Fidel Castro came to power in an armed revolt that overthrew Cuban dictator Fulgencio Batista.

Answer 2

I think the answer is the first one "the failed Bay of Pigs invasion"