Question

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Answer 1

1. Who was the chief organizer of the spy ring that passed secrets to the Soviets through Klaus Fuchs? Julius Rosenberg  Explanation: Julius Rosenburg and his wife Ethel were responsible for recruiting a number of spies in the ring and coordinating their efforts.  
2. Whose work at the Manhattan Project was important in the prosecution of the Rosenberg case? David Greenglass Explanation: David Greenglass was a machinist who worked on the Manhattan Project. He passed information on to Julius Rosenburg (his brother in law). He later provided testimony during Julius and Ethel Rosenburg's trial.