Question

Which of the following was a reason for entrance of the United States into World War I?

A. German use of unrestricted submarine warfare
B. German use of unrestricted tank warfare
C. US wanted to ensure a new nation for the Polish people
D. US got pulled into the war through its alliance with France

Answer 1

German use of unrestricted submarine warfare, so answer is A :)

Answer 2

Hey there!

German's use of unrestricted submarine warfare was a reason for entrance of the United States into World War I. So, the submarine warfare was for an entrance into the World War I. This means your answer is going to be Option A.

Hope this helps.
Have a great day (: