The three correct statements that describe the United States' movement from neutrality to engagement in World War I are:
B. One of the main causes of the United States declaring war on Germany was the use of unrestricted submarine attacks.
C. President Wilson campaigned in the 1916 election with the slogan "He kept us out of war."
E. The United States began to support war against Germany after the Zimmerman telegram was intercepted.
Explanation:
- Statement A is incorrect because the United States did not declare war on Germany in 1916; it occurred in April 1917.
- Statement D is incorrect as well; prior to the war, the United States had more trade and loans with Great Britain than with Germany.