Hydroelectric power and natural gas was introduced in the late 1800s
It could be argued that as its intellectual voice, "Langston Hughes" became the leader of the Harlem Renaissance, although of course there were many other prominent leaders as well.
They started the korean war to prevent the spread of communism cause they associated communism with Russia. They did not like Russia .
"The Cuban Missile Crisis was Russia getting ballsy and really mad at us (Likely due to us having missiles in Turkey that could hit them)
And the Vietnam War was started for the same reason as the Korean War"
Answer:
It helped Allies stop a German offensive and support a counteroffensive that led to Germany's defeat.
Explanation:
I'm not entirely sure of the answer, but through the process of elimination I've made my way here. I know it's not the first one, because although we had a poorly trained military, we were not short on supplies.
I know it's not the third one, because obviously the United States entering the war had an effect on it. Even though there was a German blockade we most likely could've gotten through it.
It's probably not four because saying that the United States entering the war immediately caused the capture of Berlin is a bit extreme- all though the United States entering the war caused it to end quickly, it was still around a year.