Why did the world and America get upset about the sinking of the HMS lusitania?

The sinking of the RMS Lusitania on May 7, 1915, angered the world and America because it resulted in the deaths of 1,198 passengers, including 128 Americans, raising concerns about civilian safety during wartime. The Lusitania was torpedoed by a German U-boat while carrying both passengers and munitions, which fueled outrage against Germany and its unrestricted submarine warfare policy. This incident shifted public opinion in the United States, contributing to growing calls for America to enter World War I. Ultimately, it highlighted the dangers of maritime warfare and the impact on innocent lives, intensifying anti-German sentiment.