Answer: C is correct (the security arrangements that Stalin made to protect himself).
Explanation: the term "Iron Curtain" was used for the first time by Winston Churchill in American town of Fulton (Missouri) in 1946 (so-called "Fulton Speech). At that time Churchill was a ex-prime-minister, but the phenomenon of "Iron Curtain" was quite visible even from the UK.
<span>To deplete resources that might help prevent Germany from coming to power again</span>
The answer to your question is quite simple:
Places and regions.
The major lasting impact that the demands of the Anti-Federalists gave us was the Bill of Rights in the Constitution, since this protects the essential human liberties that the Anti-Federalists were worried would be taken away.