The chief reason given by woodrow wilson for requesting a declaration of war against germany in 1917 was the
(a) refusal of germany to accept the fourteen points as a basis for peace negotiations
(b) need to establish a league of nations after the war
(c) resumption of unrestricted submarine warfare by germany
(d) economic rivalry between the united states and germany
(e) cultural ties between the united states and england

The resumption of unrestricted submarine warfare by Germany (C) was one of the major reasons why Wilson decided to declare war against Germany. The U.S. had stayed out of the war and sought to bring about a negotiated solution. However, after Germany began unrestricted submarine warfare against all ships near Europe of any power the U.S. cut off diplomatic relations. Then following the sinking of 3 U.S. ships on March 18, 1917, President Wilson requested that Congress declare war on April 2, 1917.