America's entry into World War I in 1917 was influenced by several factors:
1. **Unrestricted Submarine Warfare**: Germany's practice of unrestricted submarine warfare, which involved attacking ships without warning, particularly affected American vessels and citizens. The sinking of the British ocean liner RMS Lusitania in 1915, which resulted in the deaths of 128 Americans, heightened tensions.
2. **The Zimmermann Telegram**: In January 1917,


