Amain 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

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.

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

i discarded the supernatant and kept the pellet in this part of the experiment because you have to return all unused chemicals into their original containers at the end of each labratory.

explanation: