1915 - German U-Boat sank the British line Lusitania 1945-Germany Signs unconditional surrender 1954 French lose the battle of Dien Bien Phu in Vietnam
On this day in 1931, President Herbert Hoover officially dedicates New York City's Empire State Building, pressing a button from the White House that turns on the building's lights. Hoover's gesture, of course, was symbolic; while the president remained in Washington, D.C., someone else flicked the switches in New York.
On this day in 1945, holed up in a bunker under his headquarters in Berlin, Adolf Hitler commits suicide by swallowing a cyanide capsule and shooting himself in the head. Soon after, Germany unconditionally surrendered to the Allied forces, ending Hitler's dreams of a "1,000-year" Reich.