<h3>
Answer:</h3>
D). Germany attacking merchant ships that carried American civilians
<h3>
Explanation:</h3>
The reason why answer choice "D). Germany attacking merchant ships that carried American civilians
" would be the correct answer because this is the reason why United States decided to get enter the World War.
The Germans sent out submarines into the seas and destroyed merchant ships, in which it carried American citizens/civilians. The Germans were using the submarines as a "warfare" that's in the ocean. These boats were called "U-boats." More than 100 Americans that were on the merchant ships died because of the German attacks. The Germans sank a couple of merchant ships that had american civilians in it, in which made the U.S out raged.
The United States was all about its people, and if a country were to ever do something to its people, they would take action upon that. That's what the U.S did, they decided to enter World War because of the attacks on their people. The United States entered the war in the allied side.
<h3>I hope this helped you out.</h3><h3>Good luck on your academics.</h3><h3>Have a fantastic day!</h3>
