The answer is C.
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Westward expansion routes
It helped in shaping the country, civilization of citizens,governmental systems emerged ,general growth in economy was eshtabished and also increase in population growth rates due to increased productivity thus secure food supply
No because it was build in the late 1920s
"World War I triggered on June 28, 1914. World War 1 was triggered on 28 June 1914 by the assassination of the Archduke Franz Ferdinand of Austria and his pregnant wife Sophie. Archduke Franz Ferdinand of Austria was the nephew of Emperor Franz Josef and heir to the throne of Austria and Hungary."