It's been 80 years since America dropped the atomic bomb on Hiroshima, and a simulation of the tragedy shows just how devastating it was for so many people. On 7 May 1945, Nazi Germany was defeated by the main Allied powers - the US, the UK, Soviet Russia, China, and France. Amongst many other countries, they worked together to stop the likes of Germany, fascist Italy, and imperial Japan from taking over. On 30 April, Adolf Hitler, who died by suicide in his underground bunker in Berlin, was out of the picture, but Japan refused to surrender. Advert "The United...