What happened after Germany sunk the Sussex?

After Germany sank the British passenger ferry Sussex in March 1916, killing 50 people, it sparked outrage in the United States and heightened tensions between the U.S. and Germany. The incident led to increased calls for American intervention in World War I. In response to public pressure and diplomatic protests, Germany issued the Sussex Pledge, promising to restrict submarine warfare and ensure the safety of civilian vessels. However, this pledge was not upheld for long, eventually contributing to the U.S. joining the war in 1917.