<span>The nation's largest railroad center was found in Chicago. Chicago is considered as the most important center of railroads in North America. Chicago has been the most significant interchange point of commercial transportation between the nation’s great railroads.</span>
The answer for this question is D. Domestic (I am doing the same test as you and I chose it and it was correct :))
Hope it helped!
Plz mark brainliest!
The answer is D
Reason being that the sinking of ships by German U-boats, and a German attempt in the Zimmermann Note to get Mexico to declare war on the U.S. pushed the U.S. to getting involved.
"was a social contract that established a form of self-government" is the correct answer
