The answer is Berlin, but some info
The USSR got the western bit, and the US, Great Britain, and France decided to combine their parts together, forming East Berlin
Industrial expansion and population growth radically changed the face of the nation's cities.
"<span>(2) United States entry into World War I" was a result of the other three, since all of the other three were issues that caused great alarm for the world, especially the US. </span>
I am sort of confuse becouse this is phrased as one question (at first i thought you where talking about the recent fight about not putting in a pipeline but i relized you said why DID)
So i will split it into 2 Native americans fought for land becouse for one they needed a place to live and second they belived the great spirit wanted them to live where they did
They fought for water to live/drink
Answer:
Herbert Hoover and Al Smith