Answer:
US government responded to Robert Oppenheimer's opposition to developing the hydrogen bomb by accusing him of disloyalty.
Explanation:
I believe the answer is: Union States
These states fight for the abolishment of slavery during the civil war, while the states that fight to maintain slavery is called to confederate states. It's predicted that around 200,000 soldiers from the union states died during the war, especially during the earlier stage.
The Zimmermann Note was first suspected of being a forgery by the British, to make the Americans think that Germany wanted to cause war for the USA, and thus pushing the Americans to help the British. However, while the USA government officials were still debating whether this was a genuine note, the German Foreign Secretary, Arthur Zimmermann himself, admitted the note was genuine.
There would have been no reason for Zimmermann to falsely claim that this note was true, as this admission would have caused America to indeed join the war against the Germans.
The answer is D
I know the answer because I just did this test
A. Persia. Persia was acquired after Prophet Muhammad's death. Hope my answer was useful.