Soraya World War II (September 1, 1939 - September 2, 1945 ) - the war of the two world military and political coalitions, which was the largest armed conflict in the history of mankind. It was attended by 62 of the 73 States that existed at the time (80% of the world's population ). The fighting took place in three continents and four oceans waters. This is the only conflict in which nuclear weapons were used