Which action was a result of the other three?
(1) Germany’s policy of unrestricted submarine
warfare
(2) United States entry into World War I
(3) interception of the Zimmermann Note
(4) United States loans to Allied nations



Answer :

"(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. 

Answer:

United States entry into World War I.

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