The United States declared war on German ally Austria-Hungary on December 7, 1917. Germany's resumption of submarine attacks on passenger and merchant ships in 1917 became the primary motivation behind Wilson's decision to lead the United States into World War I.
Hope this helps! ;)
My answer would be D. Urban white middle class citizens
Thomas Edison said “I was always afraid of things that worked the first time." This resource is part of the Thomas Edison Collection.
The first one should be the correct answer.