Final answer:
Alger Hiss and the Rosenbergs were accused of espionage and passing on atomic secrets to the Soviet Union. Alger Hiss was found guilty of perjury, while the Rosenbergs were executed after being found guilty of facilitating the transfer of nuclear secrets.
Step-by-step explanation:
Alger Hiss and the Rosenbergs were accused of espionage, specifically, passing on atomic secrets to the Soviet Union. Alger Hiss was found guilty of perjury, while the Rosenbergs were found guilty of facilitating the transfer of nuclear secrets. Alger Hiss was sentenced to prison and the Rosenbergs were sentenced to death. They were executed in 1953.