Why did the passing of atomic secrets to the soviet union by the rosenbergs represent a significant threat to the united states?

it meant that the soviet union would be able to make a direct nuclear attack on the u. s. mainland.

it meant that the soviet union would be able to develop defenses to stop u. s. nuclear attacks on soviet territory.

it meant that the united states would no longer be the only nation on earth with control over atomic weapons.

it meant that the united states and the soviet union would be likely to exchange atomic bomb attacks in the korean war.

The correct answer is: "It meant that the United States would no longer be the only nation on earth with control over atomic weapons".

The 'Rosenbergs' were a US couple (husband and wife), who were surprised and subsequently convicted and executed by the US federal goverment in 1953, for revealing national confidential information. They provided to the URSS the designs of nuclear weapons that only the US had achieved to develop and, from this moment on, the US stopped being the only country in the world with access to nuclear weapons.

b) that he was not a free man

answer; the period of time known as the middle ages;