Factors Leading to U.S. Entry into World War I

World War I, known for its trench warfare and extensive use of new military technology, reshaped the global landscape in the early 20th century. The United States entered the war in 1917, joining the Allies against the Central Powers. Understanding the key events and motivations behind U.S. involvement is critical for grasping the impact of this conflict.

Which of the following factors most significantly contributed to the United States' decision to enter World War I?