What nation did the director fear might use the weapon they had developed against the soviet union germany japan the united states communist china

The correct answer is C) the United States.

The nation that the director feared might use the weapon they had developed against the Soviet Union was the United States.

The quote of the Director referred in the question is the following: "When we succeed in resolving this problem, we felt relief, even happiness-for in possessing such a weapon, we had removed the possibility of its being used against the USRR with impunity."

It was said by the Director of the Testing in the Soviet Union. Laboratory

We are referring to the Cold War years that confronted the United States and the Soviet Union in many aspects such as the arms race to construct nuclear weapons or the spread of Communism by the Soviet Union or the measures by the United States to stop it.

answer; i believe the two groups were irish immigrants and chinese immigrants;

this means that germany had to pay the allied countries. reparations are/is essentially payment for something that they have done wrong, so after ww1, germany was forced to pay reparations so they could replenish the allied countries resources' that they had lost during the war.