Hi there!
The threat of Nuclear warfare. The soviets trying to spread communism. I don't believe anyone really won this war because it has caused lasting tension between the U.S. and the Soviet Union now present day Russia.
<em>Hope this helps</em>
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<em>-WolfieWolfFromSketch</em>
Answer: In the West, Americans found a lot of land to expand, new species of plants and animals, and access to the Pacific Ocean. Because of their access to the largest body of water on the planet, international trade was possible (but wouldn't begin for another 75 or so years, assuming that this is in the mid-1800s).
The one that you have picked is correct
Mussolini's government has really changed the country, and Italy took part in the first world war. In 1920s there were also climate changes.