Why did the Allies win the Second World War ?

Abstract

It is a question very hard to answer without having to be hypothetical on some historical points and events. There can't be a ‘one and only' answer to this question exactly because of these hypotheses and the many independent events which could have changed the face of things for the Allies as for the Third Reich. From today's perspective the victory of the Allies can seem inevitable but in 1942-3 the outcome of the war was being decided on a knife-edge