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.
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A.) The most essential resource to the first industrial revolution was coal. While Iron and Steel were essential resources in the second industrial revolution. B.) In the second industrial revolution, industrial developments changed American lives, there were many new inventions and industrial development allowed for faster communication, more productivity and wealth for industrialized countries.
Answer:
Russia
Explanation:
most economic developed country
Switzerland was not a member of the Allied forced during World War I. They instead managed to remain a neutral power. They were neutral during World War II as well.